My current machine came from Dell's outlet. I got it at my house within 2 days of ordering, primarily because I'm 1.5 hours from Austin (Dell's HQ).
Machine has had no issues whatsoever. 'Course, given the track record with Dell machines, I make sure I've backed up all my data for any sort of possible problems.
But all in all, they have great prices on their stuff. The computer I hate (at the time I got it) was worth some $800 or so bucks if I had gone straight through Dell.com, but through their outlet, I paid $440 or so after coupons.