[coolhandcountry]

the ib 3800 are great. I have had good luck withthem and the gp 3700. they have a little better performance than the gp 3300. I think the ib has better than the gp. I would choose one of them or lipo. Lipo is lighter with better voltage. I am worried that the ib 4200 may not have problem fixed yet and they are new batteries on market.