Hobbyking lipos are fine , I have bought lots over the years since I only fly electric. They out performe some of the big names and most importantly they are as cheap as peanuts !
I recon I have add around 30-40 packs from them , ranging for 2s , 3s, and 6s lipos ...
The only thing I had once was a loose connection insidethe packon a 3s 2200mah pack ..