I have the 8200 and had it customised to my specs and it just rocks.... one thing though...if you are looking at getting one make sure you get the hard drive with the quite fan. Some of the 8200’s come with this fan that sounds like a jet liner landing...I think like mine.
Other than that I have had only one problem and that was upgrading to Win XP. some of the hardware components are not compatible, sound card, CD burner etc....so I had to revert back to ME.
Kind of stupid when you think of it that Dell would send out a machine that required extensive user reconfiguration when you wanted to upgrade your OS.