I like Dell workstations. I think they are pretty durable for the most part. So are the newer Latitudes. I have a Dell l933r desktop from 1998 or 1999 that's still running like it's brand new. I think I replaced a hard drive, goosed up the memory, sound card, and cd-rom with a burner (that was replaced with a newer burner).

P3, 933Mhz, I think its at 512mb/ram, on board gfx, came with ME but was wiped many, many times and now has XP, etc. I gave it to my sister after college and her family has been using it for years. Not bad for a 10-11 year old desktop.