Here's my take on the subject....... not that it's worth anything but here's some info
Mech mods, if you are able to use the steam-engine calculators sufficiently, mech mods are ok, will work well, and you should never have a problem with any mech mod out there. Of course, the other side to these are battery safety and how prone are you to making a slight mistake with batteries and that could mean the difference between a good vape and a bad day.
TC devices now... most TC devices are also variable wattage giving you the ability to fire both nickel (maybe even titanium and also Stainless 317L) and Kanthal/Nichrome builds. I don't have any issues at all with battery life with TC devices so far, and best of all, when TC is on with nickel in my experience, dry hits don't exist. Another good thing about TC devices are they are relatively becoming more common so that means some are affordable for those who don't have a lot of money. And one more pro for TC devices are if you are someone who likes to buy things prebuilt, very many new tanks are coming with Ni200 / Titanium / SS 317L coils that take advantage of TC. Cons are, some devices take an instruction manual to set up correctly and, without said instruction manual sometimes you are going to get a not-so-good vape. In my experience, Ni200 at first was VERY finnicky to get right. Setting up the temperature to where the vape wasn't too hot for me was a bit of a pain, and for the same reason, getting the correct flavor from your juices is the very same pain.
No between mechanical mods and TC which are better... Usually this is subjective in the fact that it is up to the user to dictate which will work best. What the user is more comfortable with. If you don't mind weird ... settings that you gotta set up and don't mind spending half a day to a whole day tinkering to get these settings right, finding the tank that works best for you, and overall having to go out of your way a little bit for a little bit of a better vape experience, then try out TC. It works great when you figure out how it works (or rather, how it is supposed to work,) and the experience is enjoyable when it works right. On the other hand, mechanical mods when you know how they work, are quite fail-safe products. They can't really take advantage of the different TC wires out there, but that doesn't mean that they aren't any good. Basically I only use mechanical mods for my big fat crazy twisted + clapton + whatever else I felt like doing coils. They work the best for those and when I feel experimental with making wires, I'm almost always sure a mechanical mod can handle it. I use TC mods when I want crazy size clouds (weird I know.)
A little more on what I just said; "I use TC mods when I want crazy size clouds (weird I know.)" I have found that even with only 40 watts, a 30 gauge Ni200 build on a TC device has generated quite possibly the biggest thickest clouds I have ever seen. The flavor, is not so much there but, the clouds are huge. Hit the fire button, take a puff, and huge clouds were coming out. I was quite amazed at how well Ni200 and TC devices are for this. On my mechanical mod (because some of you guys may be saying I'm doing this wrong) I have a 24 gauge wrapped with 30 gauge clapton setup, 3.5 wraps dual setup, giving me somewhere in the ballpark of .14 ohms on a series mechanical mod 2 batteries. The clouds are good but on top of it all, I STILL got bigger, thicker clouds from a dual 5.5 wrap 30 gauge Ni200 build. Nothing beats the clapton at flavor though, as that kinda should be noted.
