I know I didn't like my pre-order expierence with them.
I pre-ordered Guitar Hero 3 for the 360 (with Wireless Guitar) and they dragged their feet on it. I don't think they got enough units in, but I had to constantly pester them to find out when it was actually going to ship. Granted, they had a great price on it, so I was willing to wait for them to fill the order, but if you're not getting a fantastic deal, take your money elsewhere.