Coppertop Needs a New Computer

Alright people, I’ve narrowed my options down to 5 things:

1) Wait untill PCI express becomes more widespread, don’t buy a computer now.

2) Get a PCI express setup (32bit):
(no specs yet)

3) Get a PCI express setup (64bit):
(no specs yet)

4) Get a non PCI express setup (32bit):
-AMD Athalon XP-M 2500+ ($126)* http://www.canadacomputers.com/cpus.html
-ASUS A7N8X-E ($150)http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=25208&CatId=1129
-Western Digital Caviar SE 200gb Drives ($191, 40 rebate. x2 = $383) RAID 0 http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=985129&sku=TSD-200JD
-Corsair TWINX 512mBx2 ($358) http://www.canadacomputers.com/memory.html
BASE TOTAL: $1017

5) Get a non PCI express setup (64bit):
-AMD Athalon 64 3700+ ($684, socket 754)
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1035206&CatId=1177
-ASUS K8V SE Deluxe ($154) http://www.canadacomputers.com/motherboards.html#amd
-Western Digital Caviar SE 200gb Drives ($191, 40 rebate. x2 = $383) RAID 0 http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=985129&sku=TSD-200JD
-Corsair TWINX 512mBx2 ($358) http://www.canadacomputers.com/memory.html
BASE TOTAL: $1579

I’m having difficulty deciding, so I need you people’s help. Please keep in mind that I have ~$2200 CDN to spend, and that I do 3D stuff, Photoshop, Flash, and games-o-plenty.

Again, all feedback, thoughts, specs for the PCIe computers, and price corrections are greatly appreciated.

*It’s the same price as a 2600+ and it can run upto 3400+ speeds.