7XL , run 5s2p or 4s3p pack?

[zeropointbug]

From what i know, and what they say is that they run at the rated cell 30C discharge. Personally though, i am running a CCCV power supply that charges the batteries perfectly and the most reliably than any charger. However the BK Precision P.S. that i bought was $300, so its not for everyone, however i can charge any battery i want with it...

http://www.bkprecision.com/www/np_pdf.asp?m=1696

Mine is the 1696 version with 0-20V, and 0-10A, completely programmable on the unit or from PC.

Anyhow, i have decided that i will stick with the 5s2p pack setup, it's a good mix of power and runtime and i can charge in 30 minutes. So it's pretty fast and easy charging.