Battery Reccomendations

[Re~Mix]

You always here about people saying that when running brushless motors and controller's, the right batteries make all the difference in the world. Now, currently I run Trinity matched sayno 2400's, but after 3 years of use, I figure its time to step it up, and with all the new packs it seems to be a world of decision making.:P:

So, I went out and bought 12 non-matched gp3700's. Hopefully these batteries are up to par in your minds? I also purchased a Novak Ionic charger (the new one) from a buddy who bought two by accident from tower. It looks like a decent charger to me, just like to hear you opinions.

Also, with the old 2400's, should I just trash them, or resolder up some 7 cell packs? Thanks