I've ordered from them. The part I ordered was not in stock, so it took an extra week to get it. But the experience was just fine, nothing wrong with it.
I have had a lot of success with Mircopro (
http://www.micropro.com). They sell a lot of stuff through Pricewatch, and have very competetive prices with a good selection. One suggestion: when you visit these sites, do it by clicking on the "Buy Now" icon in Pricewatch (this appears on the line of the item you're interested in purchasing).
By using this method, I have found that a great deal of the prices on the items will be lower to match the Pricewatch listings for that web site. When I have visited the same site directly, the same items have been listed at higher prices. And the cookies save those higher prices, so you have to delete cookies and go back through Pricewatch again.