I will have to say that I have had nothing but good experiences with TigerDirect.
My wife's cousin ordered a Soyo PC through them(No rebate involved) and it arrived the next day! The PC has run perfectly since day one.
I purchased an entire PC kit (Case, MB, HD, Vid Card, CD-Rom, Mouse, Keybord, CPU, Fan, etc) from them. There were two rebates. I received both. They took a while to arrive, but I did get them. I have had no problems with the PC. They have an outlet near me, so I don't have stuff shipped.
I have since purchased a broadband router from them. It was a refurbished D-Link DI-604. I have had no problems with it at all.
I intend to go back soon and buy a 21" monitor, DVD burner and 200 gig HD within the next week or two.