Ok, I'm about ready to take the plunge. Here's the spec, give me your final thoughts. I have a couple options that i'd like some opinions on.
A64 San Diego 3700+ (already ordered it)
Shuttle SN25P
eVGA 6800GT or MSI X800XL (I really can't decide on this one - the low power draw on the ATI might be a big plus - your thoughts?)
Raptor SATA 74GB 10,000RPM
Western Digital SATA 100GB 7,200RPM (necessary? i'm not sure)
1GB OCZ Dual Channel DDR400 RAM
Samsung CD/DVD Burner
Logitech MX1000
Eclipse Keyboard
I've got a keyboard and monitor that I can use.
Should I do it? Should I?

EDIT: Also, what about game compatibility issues? I was a 9700 pro user, switched to 6800 GT and really liked it. with ATI i felt like some games simply didn't like the ATI cards. Is that still the case? I'm out of the loop.
A64 San Diego 3700+ (already ordered it)
Shuttle SN25P
eVGA 6800GT or MSI X800XL (I really can't decide on this one - the low power draw on the ATI might be a big plus - your thoughts?)
Raptor SATA 74GB 10,000RPM
Western Digital SATA 100GB 7,200RPM (necessary? i'm not sure)
1GB OCZ Dual Channel DDR400 RAM
Samsung CD/DVD Burner
Logitech MX1000
Eclipse Keyboard
I've got a keyboard and monitor that I can use.
Should I do it? Should I?
EDIT: Also, what about game compatibility issues? I was a 9700 pro user, switched to 6800 GT and really liked it. with ATI i felt like some games simply didn't like the ATI cards. Is that still the case? I'm out of the loop.