I've yet to see an industry standard for determining the discharge capabilities of Lipos and strongly suspect that a lot are dreamt up or are just theoretical. The Big Squid RC Lipo shootouts have shown that the Gens Ace Lipos are pretty damn good even compared to much more expensive batteries, you can see one of the tests here;
http://www.bigsquidrc.com/lipo-batte...0-mah-edition/
I use Vapextech cells as I find them reasonably priced but also have good punch and last well.
