Best battery choice?

[AAbdu at aol.com]

Ceterus Parabus the weight issue is important for me. I am not a gifted enough builder to shun a possible 3oz weight savings. The conversation was initiated because I will be flying a 2 meter Epicure approaching 11 pounds, in advanced with a very reliable and friendly YS 120 FZ. I have had plenty of power in the past (must've gotten a good one), but I never had to do a triangle loop with 2 of 4 at the top. I wanted to replace the very heavy Steve Steel (even sounds heavy) pipe with the feather light ES one that I have sitting in the box, but it will not fit in the pipe tunnel. The next big weight variable seems to be the battery, but I will not sacrifice reliability for weight. 
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