What vendors do you trust for PC build parts?

CaryTheSane writes: "Howdy Slashdot! Its been six years, and its finally time for my old Pentium 4 to retire to web browsing duties, and I *need* a new gaming PC. I want to roll my own this time, and I've scoped out most of the parts I want for a moderately high end build. What online vendors have you used before that you trust for parts? I've dealt with NewEgg before, and frankly I like them, but I happen to live in TN, a state they have a presence in, so they have to hit me up for a 9.5% sales tax. That really eats into my system build budget, so I'm looking for alternatives. I'd like to use the fewest number of vendors, preferably only one, so that all the parts arrive at the same time, and I don't have one part's 30 day return policy run out while I'm waiting for part from another vendor to show up. Please don't tell me about your favorite console, I have no interest in any console, I know that all of them are cheaper than the video card I want to buy, I just never liked them. So, what reliable and economical parts vendor do you suggest?"