Heya GUys.
I haven't as yet tried IB cells but i am getting some early next week.....
As for GP37's i think they are an average cell at best!! I have 4 packs that a 7 runs old now and they have dropped 35+ seconds on a 35amp discharge on my T35. The first run they did was on my T35 so i had a bench mark to work with.
I haven't deadshorted them, they have always been left with some charge in them..... they are pretty great for voltage and IR currently....but in mod TC a 330 35amp pack won't cut it! more so when they were first cycled they cycled out to around 380!
Glenn