I have used the IB3300's for a couple of months now. I bought cells in bulk and a friend matched them with his turbo 35....one cell at a time. Cycled each cell 3 times at a 35 amp discharge. Had 2 dead cells out of the 90 and 2 more very week cells. The other cells are awesome and out perform any other 3300 cells that I have tried. We grouped the cells together by voltage and I have a couple 1.170-1.172 packs with 360-370 runtime and a few more 1.164-1.167 packs with about the same runtime....all at 35 amp discharge. The packs perform best at 7 amp charge and have loads of punch in stock and enough runtime in mod touring with 10x1 DC V2's. Too much work though matching cells...so I will run the SMC 3600 packs in the future.
Thanks....Dwayne