I'm buying 2 12" Infinity Kappa perfects and i'm looking for an amp. A friend of mine is selling a PPI 21400.2 and I'm wondering how this amp would go with these subs. Better than the JBL 1200.1?

350watts x 2 @ 4ohm 700watts x 2 @ 2ohm 14000 watts @ 4ohm mono

If these Kappa Perfects aren't the DVC's (Dual-voice coil) then I'd stick with the JBL amp. If they are DVC's then you can run them using any of the load configurations you gave with the PPI amp.