I own my servers, Co-Locate with US Internet
... I like them
My original server was/is a Dual P3 550mhz, dual 36gb 10k scsi drives and 1gb ram. This server ran a 1 server setup of H-Sphere.
Now that I am expanding and adding 64 new clients (couple hundred more sites) I just purchased 3 new 1U P4 2.4ghz, 1gb ram, dual 40gb drives w/raid1 and dual 10/100/1000 NIC's. These will be set up in a 3 server cluster with H-sphere, and set to easily add more servers as I grow.
My existing server (Dual 550) is getting an upgrade to dual 700's, and will become my Backup/Fun box