I use my Evic Supreme every day with Kayfun lite plus clones. Couldn't ask for anything better. With an output of up to 30 watts, I can't imagine that you'd need more power.
I also have two Evics, and have been using kayfun clones for over a year now. My first Evic got dropped a couple of times, and the Svoemesto Kayfun managed to smash in the little rubber washer on the center post. I replaced that, but after giving it rough use for a long time the 510 threads started to go, so I purchased a second one.
The second Evic is still working great, but once again the rubber gromment around the center pin started to get bad, so I replaced that also. My reason for upgrading to the Supreme is that the top 510 connector can now be replaced by just screwing in a new one. Of course after I got it I found that they had added an "adapter" for the regular Evic which screws over the 510 connection to give it new threads (only about $7).
Anyway, I love the entire Evic series of VW mods, as you can adjust them any way you want and aside from the weak 510 connection (due to using chrome plated brass) they are a great vape.
I don't use microcoils, as I get what I need just using 3mm silica and 5 wraps of kanthal, and I also run at pretty low wattage (usually 6 or 7). I can crank the wattage way up to burn gunk off my coils though!
I also use Protanks quite often (with my rebuilt coils) and they work quite well also. I use the Evic to test my new coils, and it works well to let you know if you have a short, and the resistance of your coils.