Trinity has both the gp 3300's and the sanyo 3300's...im looking at the 4 cell packs. Comparing the 2 it seems that on average the sanyos have very sight advantage in average voltage, but the gps have more run time. I have also heard that after a while, that the sanyos lose preformance...is this true??? There is a big difference between the team sanyos and GPs in price(almost 30 dollars) so am leaning towords the GPs...what do u think i should get???