Right now I'm looking at the P4 2GHz processor (Rackshack), but I've also received a counter-offer for a server equipped with _two_ PIII 600MHz processors. Which setup is more effective for running database-driven bulletin boards?
Also, does anyone know how much Rackshack would charge just to change the disk drive to a SCSI one? Has anyone done this upgrade with them before?
With regards to server software, I check out demos of Ensim and Please. Ensim seems fairly straightforward, though the design/layout doesn't seem as friendly and easy-looking as Plesk's. The only problem with Plesk (6.0) is that is seems to support Postgre... and not MySQL.

Control Panel looks really good from the screenshots, though it's too bad that they don't give a demo so that one could try it out to see how it feels.