New to vaping, I've been using a 510 for two weeks now only because of recommendations I found on this forum. If anything, I think the 510 is talked up here a tad more than it deserves - I'm lucky to get a half hour of heavy vaping from a battery. But the naysaying here gave me a heads up on the worst to expect and it was a selling point for me to know I could upgrade to mega batteries or an eGo. I needed both the positives and the negatives to make an informed decision on what to buy and what to do with what I'd bought. I'm not saying, I'm just saying...
Only a half-hour of heavy vaping?? Do you mean the battery dies after only a half-hour, or do you mean a heavy plume of vapor on exhale for only a half-hour of use? If it's the latter, I found that using the http://www.e-cigarette-forum.com/forum/cartridge-mods/52430-ptb-straw-mod-ptb-made-easy.html mod for my cart gives me huge plumes of vapor until my battery dies (about 3-4 hrs). Just a thought.