I've read so many reviews, watched tons of video reviews, and read a million posts on here. I think I may be further away from a decision then I was when I first started looking! I haven't seen a direct comparison between the tank 510 and the KR, but of course have looked at the debate between the regular 510 and KR. So, like most people starting out, I want it to look like a cigarette. I'd just as soon have 4 batteries, a pcc, and a passthrough for at home then have a huge battery. I'll likely change my tune later, but know when I do, I'll still want a look-alike for backup and social type events. V2 Cigs has a 20% off sale, and the ultimate kit I'm looking at comes with 3 batteries, a PCC, a regular case, a passthrough, and 25 cartomizers. I like the two piece design but I'm not set on it either. The tank sounds just as convenient, and I'm sure I'll head towards refilling for cost concerns anyways so maybe the tank option would be a better start? I know the 510 has a better "upgrage path." I'm just worried since the 510 runs at a bit less voltage I'll lose on throat hit? Some opinions would be greatly appreciated!