I would agree with naucrx. Vivid has always been fair with me and provided great service. Also someone mentioned Tempe Mitsubishi, while I am not sure they are into performance parts, they do have great service as well.

 

I've never dealt with Vivid but my experience with Intense was a positive one. Even though my part wasn't in the day they said it would be, they took care of me and they are nice guys. I'd definately go there again if I needed to get a part locally.