New Machine - Good specs?

As you can see what I am aiming at here is a top of the range system which should last a good long time. At the moment I am looking at a Demonite Performance from http://www.demonite.com/systemprod.asp?systemvar=2
I have set it up like so but was wondering which option of some of the parts to go for, the one to the left is my current choise but any advice on which would be best would be great:
CPU: Pentium 4 3.2Ghz 512k level 2 Cache or AMD Athlon 64 3200+
Mobo: Asus P4S800 (P4) \ Asus K8v Deluxe (AMD)
RAM: 1024Mb DDR PC3200 Memory
OS: Windows XP Home Edition
HD1: 120Gb SATA 7200rpm
HD1: 120Gb SATA 7200rpm
OD: 16x DVD-ROM
OD2: Sony DWA14a +/- DVD writer
Video card: 256 NVIDIA Geforce FX5950 ultra or 256Mb ATI Radion pro 9800XT
I am particularly interested in which CPU to get, I really can't see any difference and no computer magazine is particularly useful in helping me decide between the Intel and the AMD.
Also the Video card, which is the one to go for?
And lastly the RAM, they offer Corsair DDR-XMS but that would be pushing the budget too far, 1gig PC3200 is still pretty future proof isn't it?
I think these people seem to be pretty good, there a front of Carrera. + there's a pretty good warranty coming with it. I tried to get the same specs from a dell but it wasn't quite so customizable and was more expensive. Do you think this is good or should I look elsewhere?
Thanks,
I have set it up like so but was wondering which option of some of the parts to go for, the one to the left is my current choise but any advice on which would be best would be great:
CPU: Pentium 4 3.2Ghz 512k level 2 Cache or AMD Athlon 64 3200+
Mobo: Asus P4S800 (P4) \ Asus K8v Deluxe (AMD)
RAM: 1024Mb DDR PC3200 Memory
OS: Windows XP Home Edition
HD1: 120Gb SATA 7200rpm
HD1: 120Gb SATA 7200rpm
OD: 16x DVD-ROM
OD2: Sony DWA14a +/- DVD writer
Video card: 256 NVIDIA Geforce FX5950 ultra or 256Mb ATI Radion pro 9800XT
I am particularly interested in which CPU to get, I really can't see any difference and no computer magazine is particularly useful in helping me decide between the Intel and the AMD.
Also the Video card, which is the one to go for?
And lastly the RAM, they offer Corsair DDR-XMS but that would be pushing the budget too far, 1gig PC3200 is still pretty future proof isn't it?
I think these people seem to be pretty good, there a front of Carrera. + there's a pretty good warranty coming with it. I tried to get the same specs from a dell but it wasn't quite so customizable and was more expensive. Do you think this is good or should I look elsewhere?
Thanks,