What is the best battery setup for a CRT?

Thanks for the help guys.
It will be nice to have some quality packs. I'm SOOO tired of the time that it takes to balance the Max Amps packs. It is a huge difference between MA and Flight Power as far as balancing.
I have heard a lot of good things about the Zippy packs. I will probable buy some of these as well. Hopefully they are pretty well balanced from the get go.