Thank you all for your suggestions, just wanted to clarify why I'm not going RAID. I will be using a 74GB raptor for the OS but disk I/O is unimportant to me. I'm going to use the 750gb hard drive for data storage so I don't want to get 2 smaller hard drives in raid 0 and risk the potential problem there. 500GB is too small for me, 750 was perfect for my needs and was actually considering getting 2 750GB in raid 1, might in the future. I wanted to go with the zalman because I felt more at ease with how it secures and its weight as I move my computer around a lot. Also, I thought anything bigger than the corsair 620 (underrated i think) was overkill as I am not running sli/crossfire. Going to run xp and vista 64bit OS's so the 4GB will come in hand, this program I run will put them to very good use, could use as much 8GB honestly. I'll try this stuff out, could always upgrade and pass along old parts to friends.
Thanks guys!
p.s. rumor has it that ncixus.com has G0 quads, keeping fingers crossed