I'm gonna have to agree with both of those sentiments. The 510 is excellent but battery life on all the "cigarette" size models is abysmal. The eGo / Tornado (had to do that as I have Tornadoes....same thing) battery on the other hand will last me about 6 or 7 hours and I vape HEAVILY, all day at my desk and it rarely leaves my face. If you have been smoking more than a pack a day, I honestly believe you can get started for not much more money with an eGo/Tornado than you could with all the extra batteries, charging case (PCC); and with a LOT less hassles.
My $0.02....whatever you decide, put a Nike on it (JUST DO IT!)
OK, I see that all their sets are relatively cheap, but there are several different models on the janty site... Which one are we talking about?
I'm trying to put a Nike on it, but don't want to burn $100 on a turd like I did with my first purchase