I've used them. I spent a little over $200 there not too long ago on various small computer parts. It took over a week to get here, but that's my fault for choosing UPS Ground. I didn't know they were based in Florida. You really can't get any farther away from me and still be in the US.

I did choose Ground though, because the 2nd Day amount was somewhat pricey compared to what I'm used too.
One of the things I bought was a Lian Li Aluminum removable motherboard tray for the PC-60 series. The sole reason I purchased a bunch of stuff from there is because they are the ONLY place I found where you can get these seperate.
Upon recieving it, it was bent rather badly. I decided I didn't want to deal with RMAing it, and I mostly fixed it myself. It's not actually going into a case, so it doesn't have to be perfect. I'm kind of curious as to how this sturdy metal could have been bent so badly, and nothing else in the box was damaged at all. Perhaps this is how PC-Mods sent it. Maybe these are rejects from damaged cases that they get shipped, or something?
Anyway, it's not a huge deal. It works for me as it is, and was MUCH cheaper then buying a full case with the removable tray, using the tray, and throwing the case away, and much easier then taking my dremel to and old case (that wouldn't fit new motherboards anyway) and hacking a makeshift tray.
I'd probably buy from them again, but only use 2 day shipping, and only if it wasn't something too big like this item was. As I said, all the rest of the stuff was undamaged and has worked perfectly.