Had a really good experience with these guys. Made an order, wanted it shipped to a different address (UPS dumps stuff on my front porch in full view of the public). One of the parts was low stock (an HKS SSQV3), but they rushed my order and got it out the door within a couple of hours. However, due to a new computer system, human error, etc. the order was shipped to an invalid address (UPS didnt catch that one). I called RSD, talked to Tanner, I believe. He got fixed immediately, order was delivered to the correct address and on time. They even put up with my ignorance when I called and *thought* I was missing a couple of parts - I wasn't. Every time I talked on the phone to them, they were polite, professional, and quick to act. I will order from them again. Thanks for the excellent customer service guys!