1st: I preffer newegg.
That said, I have bought stuff from tigerdiredt.com. The best deal was a brand news 'Syntax' socket A MB for $10 after rebate. I use the board to fold. Just can't beat that deal even at newegg. I also purchased a modem (free after rebate) HSF and some other things. I've not had a problem with them.
In the early days, Tiger direct was the only company to provide cataloges so that people could buy parts. I can tell you that it was REALLY great in 1995. Now days, with the internet and all, Tiger became 'old school'. Before there was newegg, there was tiger.