Updated the first post with a few more reviews (HardOCP and NeoSeeker) and updated the price/stock listings as well. Clarified a few points about RAM.
I finally ordered mine for my fiancee's new computer, got it all hooked up working fine (Corsair Value Select PC3200 2x512MB worked fine out-of-the-box on defaults) but the brand-new Ultra X-Connect PSU died. Thankfully it didn't take anything else out with it.

As it'll be a few days for a replacement to come, I can kinda answer questions about it, but don't expect to get much out of me (only had time for about 14 hours of Prime95 before the PSU died ... replacing it with a TTGI/SuperFlower Plug-N from NewEgg).
Her Specs:
DFI nF4 LanParty UT Ultra-D
AMD Athlon64 3000+
Swiftech MCX64+ Heatsink
2x512MB Corsair Value Select PC3200
XFX GeForce6 6600GT 128MB PCIe
temp Maxtor HDD until her Seagate 7200.8 comes in
temp CDROM until her NEC 3520A comes in
Lian-Li PC60 case
TTGI/SuperFlower Plug-N PSU when it arrives from NewEgg