I been doing DIY for couple months now but I feel like all my juices are not sweet enough. I can smell good flavor on inhale and exhale but I want that little sweetness in my month on the aftertaste. I am wondering how I can achieve that effect? I don't want to add EM to my juice because I heard in the long term it will mute my flavors. I heard some good things about sucralose. Can someone guild me on which brand and where to get some? Or should I just use TFA brown sugar flavoring instead?
Notwithstanding that Sucralose and Ethyl Maltol are very different animals, and not really comparable...
For the mouth sweetness you've described, CAP Super Sweet 1 drop per 10 ml (to start, increase to taste), will provide that, but keep in mind that it's basically just laying sweetness as a separate element on top of your other flavors. It does provide a really nice mouth sweetness, and if that's what you want, Super Sweet will do it cleaner, sweeter, and with a lot less than the other, more diluted sucralose sweeteners. However, it will override your mix and bury other flavors under its sickly-sweetness if too much is used. 1% will yield a very sweet juice, but that's also high enough that it's starting to obscure other flavors. Taste a drop of it, it's pure sweet. Strong stuff, use sparingly.
EM on the other hand won't give you that sweet mouth taste. At very low % it will merely smooth out harsh edges without adding any noticeable sweetness at all, and IMO this is its best trait. I use tiny amounts of it in some of my harsher tobaccos. It's like using fine grit sandpaper to smooth a rough surface, if that makes sense. At higher % it'll add a kind of blended sweetness to your flavors and not be noticeable as a separate element, but rather merge everything into a single sweeter element, but in the process it will also flatten the some of the finer, less dominant elements. The simpler your mix is, the less potential for EM to adversely impact it, but if you go too high with it, it will mute, flatten, and eventually turn your juice into a flavor-lacking, one-dimensional mess.
TFA Brown Sugar is not the droid you're looking for. It has a distinct flavor profile, along the lines of (though not exactly) caramel.
If you try stevia, post back with your results. Personally I can't stand the taste of it.