Newegg. I think the layout of the site is a lot better. The reviews while a lot of them are not as helpful still help me find problems with products that I am thinking about buying.
Overall anymore Tiger is alittle faster getting it out the door. Tiger is trustworthy. Really been ordering from them longer then Newegg. Tigers been around longer too. Just dont hold your breath for the rebates though.
Regardless, I've purchased from them both before and was rather unsatisfied. Shipping was slow, my rebates never came, and their return service is a pain in the butt!
TD by far. I refuse to buy from Newegg anymore. Every time I do my order takes forever, gets screwed up, is boxed inappropriately, I get open box items, ect, ect. I've not ordered from there once without some major hassle. Plus their customer service is awful.
TD on the other hand I've spent several thousand dollars at without many issues. The couple I've had have been minor and they're always quick to fix them and I usually end up getting a gift certificate or something out of it.
As for rebates, both companies are bad about them because they're not done through either company. Most rebates are done through rebate companies that rarely pay out. I don't ever count on them. The only time I do is if they're taken out instantly at time of purchase and TD seems to be better on those as well.