Don't buy batteries from China. Ever. Not only do you risk your package being seized or returned to the vendor, they use counterfeits far too much to ever risk it. Buy from a reputable battery dealer.
Genuine AW Batteries at RTD Vapor This is one.
If you want to sub-oHm, the Sony 30 amp batteries that were recommended earlier are the way to go. 100%
If you just want to vape 1.2 ohm and higher, AW protected batteries all the way, or AW IMR's with a kick or 2 cent fuse.
If you ignore that advice, then all I can say is avoid anything with "fire" in it's name (those are made for flashlights only, and are not high drain).
You should pick up the kick clone from FT, and get a nice selection of drip tips while you're there as well. They also carry decent chargers (read the comments to find the good ones) and ohm meters as well...some specifically designed to use with 510 attys. Again, read the comments to separate the trash from the good stuff.
Edit: Efests are good batteries too. So are Panasonic and Orbtronic, but those are often counterfeited, so be careful.