I like my Kanger T2's (TCC) and haven't felt the need to try a bcc.
My number one go to is a Vivi Nova with a rebuilt cotton roll wick and coil. The flavor is amazing and the wicking performance is great. The only bottom coil that I liked the flavor on are Evods, but they don't seem to last long before I have to replace the heads on them. I still need to work on rebuilding those but haven't gotten around to it yet. Plus One Vote for Top Coils!
I wish they would make a top coil pyrex vivi nova.... TOP COILS FOR WORLD PEACE!!! zombie....
Love the iClear30's, dual coils, warm vapor and wicking has never been an issue.
My vapor store has them theyre called V-Fate.