I think I've gone through all the various delivery devices by now. This includes various versions of the Vivi Nova, RBAs, Genesis tanks, cartos, tank cartos, iClear 30, Kanger T3, Kanger EVOD, tank systems such as the eGo C/T type, good ole fashioned atomizer/cartridge combo.
My top 3 in order of preference is carto tank, carto, iClear 30.
Why? Because carto tanks are easy, consistent, and if you buy a good quality cartomizer the flavor terrific.
Dripping is great too but not really practical when you are on the move.
Kanger t3 and EVODs? Out of the box are junk IMHO. They easily burned for me and I'm not fond of the tiny wick that easily breaks apart.
Vivi Novas? Only if you like sucking watermelons through a straw. The draw on these things are horrid (again IMHO), the flavor is muted, they gunk up easily, and adds a funny taste to your
juice.
iClear 30? Not bad flavor and vapor but again they tend to add a funky flavor over time to your
juice. They are also very temperamental. I bought 3 of them with a 5 pack of heads. Each head cost me $3. That's a total of 8 heads. I've had to throw away 4 of the heads as 1 had a short and the other 3 only had 1 working coil. When they work they are great (still not as good as carto tanks) but I would definitely take these over Vivi Novas in a heart beat.
Gensis tanks are just not practical for me. I have a full time job and kids. I just want to be able to fill up with juice and go w/out having to bring any tools w/ me in case i develop a hot spot in my coil.
Out of today's choices of delivery devices carto tanks fit all my needs. They are easy, consistent, great flavor, and can be really cheap to get into.