Hey everyone! I am building a new computer and wanted a few suggestions on making my final decisions. I have each component narrowed down to two options. Please help me pick or if you feel i am making a bad choice, please by all means lend your advice

It will be used mainly for intensive web browsing, online radio streaming, music production, some video editing and LIGHT gaming
CPU: Intel core 2 duo e6550 or e6750
Motherboard: EVGA nForce 680i or ASUS P5K LGA 775 Intel P35
Memory: Corsair XMS2 DHX 240pin DDR2 800Mhz PC2-6400 or OCZ Platinum 240pin DDR 800Mhz PC2-6400 (Unsure of what latency to go with)
Hard Drive: Unsure of what to go with here
Power Supply: Corsair 520W or Cooler master 500w
Video Card: GeForce 8600 GTS or GeForce 8800 GT
Sound Card: M-Audio Audiophile 2496 (already have)