Going to water cool in the near future. Just bought a Fractal Arc Midi V2. Thanx to Toms review! Decided to go with 2X 120.2 80mm rads. Going to cool I7 3820 with 2 XFX 7870's. What pump to go with? D5 or DCC. Running this system currently in Cosair 500R Graphite case. Samsung 840 Pro 120 gig...