Just stating the limitations of T3 and nothing more. While an airy cool vape may satisfy you with the eliquid you're using, personally, I wouldn't waste my Bobas and GJ in them (prefer a tight warmer draw from my PhoenixRBA). As to rebuild them or not...well, I only mentioned it since it's rebuildable. If you're willing to pay $2+ for a replacement head instead of dealing with the hassles of rebuilding them then definitely that's your choice. But if you vape eliquids containing sweetener or oil which gunk up your coils fast and shorten the lifespan of of the wick/coil like I do, then you'll be able to appreciate the amount of savings by rebuilding them yourself.
A hot rinse is enough to clean the head? Do a dry burn after rinsing in hot water and swipe the coil with a q-tip. I'm sure you'll find plenty of burnt carbon residue on it. Now, ask yourself if you want to inhale that into your lungs...
you can't avoid that gunk in your lungs,,as soon as you vape a few times you have it in your air tube,,i have proven that to my self,,just take a few vapes with a T3 and run a pipe cleaner down the air tube and see what i mean.
i do use sweetener in my diy juices.
you can not avoid crap going in to your lungs,,no matter how new your coil or wick is.
vaping is better then smoking,,but it has its pitfalls also,,not a 100% healthy for you.
you can't even breathe in air with out inhaling pollutants in to your lungs,,,damned if you do and damned if you don't.