I think I may have found another stumbling block in your search for flavor. I just got through reading
your other thread asking for tank recommendations. After reading that thread, I think you may have overlooked some useful advise there:
1. More power (higher watts, and higher temperatures)
DOES NOT equal more taste. It may give you more vapor/clouds; but it won't give you more taste. Flavor chasers (those who put the greatest importance on getting the best flavor out of their juice) are not often
simultaneously cloud chasers (those who put the greatest importance on getting the most vapor out of their juice); because the two focuses are often at odds with one another.
All that extra vapor is really just wasted juice. It looks pretty, and you can do some cool tricks with it, but it doesn't ad anything extra for your ability to taste it. This is one reason why many of the commercial "cloud competition" e-liquids are either unflavored, or available only in very limited flavor choices.
If you are still having a hard time believing this; try this quick experiment: take a beverage of your choice (I just did this with a Gatorade), and take a normal swallow of it, notice how it tastes. Now, take another swallow, but this time make it as big a gulp as you can without choking yourself. How did it taste? Was it stronger because you had more of it? Or was it the same? For me, it actually had a little less flavor because it changed my natural breathing (I had to hold my breath for a second to get it down, and during that time, it actually had less flavor). Extra vapor is kind of like that; once your flavor (and olfactory) receptors are covered/coated, everything else is just excess. This is why a single coil build, or "tootle-puffer" (low power, low vapor) vapers, can get just as good (and sometimes better) flavor as the person rocking the big, bad multi-coil setup. And, they go through a lot less juice, for a bonus.
Flavor chasers learn that different recipes have different, but very noticeable,
limited temperature ranges where they are going to taste best. Too low of a temperature, and the overall flavor profile will taste muddy, and underdeveloped. Too high a temperature, and the flavor all but disappears.
Your description of being able to taste a vape for 2, or 3 puffs, and then the flavor goes away; makes me think you are at the high end of your flavor's temperature sweet-spot. Starting with a cold tank and coil, you are able to get a bit of flavor; but as the tank and coils heat up (and retain some of the residual heat), the temperature goes too high, and the flavor disappears.
2. Just because a tank has a "good" reputation for flavor; does not mean that it will
always, automatically, provide good flavor. Flavor production is
as dependent, if not
more dependent, on
learning the correct coil and wicking
for that specific tank. Just because one setup works for one tank, and one person, doesn't automatically guarantee that it will be the best choice for a different tank, or different person.
3. Airflow is yet another crucial part to flavor development. Too much air can "dilute" the flavor and make it seem weak, or non existent. Too tight of an airflow, and the individual notes that make up the overall profile, can become unbalanced.
Airflow is not only controlled by how "open" or "closed" the air intake ports are; but also how hard, or softly you take each puff.
Airflow also affects the temperature of the coils.
All of this plays a part in how an e-liquid tastes.
Flavor "A" may taste best to me, in my Griffin tank, with 1.2 (total) ohms 3mm standard dual coils, at 28 watts, and the airflow 3/4 open.
But, if I take that same flavor "A", and same Griffin tank, and put a 0.4 (total) ohms 2.5mm dual fused clapton coils; I now need 44 watts of power, and the airflow all the way open, in order for it to taste good.
If I change the flavor to Flavor "B," but still in the Griffin tank, I may need to adjust temperature, and/or airflow yet again.
So, I hope you can see, if you are jumping all around, rebuilding, and changing juices, and running everything at 120 watts, you are setting yourself up for a pretty unimpressive taste experience.
It appears that you just got your new Reload on Saturday:
And given your self-admitted lack of patience; I am
guessing that you have not spent much time trying to fine tune these characteristics.
Take some time. Watch as many YouTube videos, for your specific RTA, as you can find. What do they say about flavor? How did they build it? What did they say about airflow? What wattage did they like
that build best at?
Search for forum threads that are specific to your RTA, and read those, looking for the same questions and answers. If you can't find anything helpful; start your own... but be specific. You are looking for best flavor builds for a Reload RTA, and want recommendations that include build, airflow, and power.
(Also, it is extra helpful if your thread title is also specific. Something like: "Looking for Reload RTA flavor build advise" will get a lot more of the right people (who may actually have some useful info); than something like "need building advise" which is likely going to get you a bunch of well-meaning, but not helpful to your precise situation, types of replies; while those that might have been helpful, ignore the generic, uninformative title, that has been asked a hundred times already about a hundred different devises.)
If you find a lot of reviews/recommendations, start looking for common trends; 20 folks are using very similar "X" setups, while 2 are using "Y," and one is using "Z." Start with "X" for your own initial experiments, but don't throw out the idea of "Y" or "Z," as one of those might just turn out to be "best" for
you.
When you are ready to start testing, again...
take some time. I always start well below the recommended temp; usually 10-20% below. Then take
at least 10-12 normal (for you) puffs
without changing anything. This will give the tank, coil, and wick, a chance to warm up and give a better representation of what the flavor is likely going to taste like during repeated vaping. How does it taste? Feel free to take notes so you can keep track of how a flavor tastes at a particular wattage. Now increase the wattage a little bit.
(For me, when I am chasing flavor, I will increase 1.0 ohm {and higher} builds, about 2.5 watts at a time; 0.99 ohm builds {and lower} I generally start with 5 watt increments until I get close.)
Repeat the dozen, or so, puffs. Now how does it taste; better, worse, about the same? During each set of puffs (once warm), I will try the airflow at 1/4, 1/2, 3/4, and full open. Keep slowly, and methodically, move up in power, until the flavor gets worse; then work back down, until it is at its best for you.
This can be a bit more difficult if you are doing this with a juice you are unfamiliar with; because it just may not be a good juice to you. Remember that you are trying to "get it as good as it will get" and not "the ambrosia to the gods." If it turns out that way; Great! But it is okay if it is only mediocre too; you are just trying to find the best mediocre it will produce.
And lastly; if you are suffering through a cold right now, fully expect to need to redo some, or all of your efforts once you are back to feeling 100%. Things are going to taste different; and your sweet-spot is likely to be different.
Best wishes; I hope you get it figured out!