Polyquest 6s 6000mah cheap?

Hi, decided to make a move from A123 to a big Lipo pack, and these looked the goods.
http://www.hobbycity.com/hobbycity/s..._6S_25C_Lipoly

And they seem to be on sale too atm, $220 free shipping* for 35 more hours.

Do people charge these at 2C? They say they can be charged at 12A, I would be at most charging at 10A in a hurry. Should be ok right.

unless you do a 80% charge you wont be saving much time by charging at 2c Vs 1c