I am glad to know I wasn't the only person stumped by the 306 faux casing. I think one of the things I am liking the most is how well it works on the ego...gives me the same type of hit that I get at 4.7 V with my VV. The flavors are really holding up. I have been vaping a 16mg midnight and it really is better with the 306...feels more like when I vape 24mg. For me Throat hit is only second to flavor, and even then its close.
The only problem I had with the 901's was the throat hit. the throat hit for me is much warmer and stronger with the 510 and 306. The 901 had great vapor and flavor. It really does boil down to personal preference. Honestly, the only way you find out what works best is to try the various options.
I have finally tried: 901(back in the beginning), Ego and 510 tanks(lost interest, better items), the tube tank, cartomizers (not my favorite), ego clearomizer and now the 306. Honestly out of all those the only two that didn't really work for me has been the 901 and the cartomizers.
still love dripping the most...306 and 510, next is the ego clearomizer and then the tube tank(only because the cartomizer takes time to prime).
Just remember the 306 comes with a removable plastic cover that looks an awful lot like a cartomizer.....