The very best bike shop I've ever been to. They are so attentive, competent and friendly. I bought my last road bike here... and they were so helpful with helping me choose the right bike for me. After listening, the guy recommended a bike that was less expensive than other bikes I was considering!
They also sell reasonably priced cycling jerseys, socks and other items that are typically way overpriced at other shops. All in all, it is a great shop. Also, they're open on Sundays. :)
If I lived in Phoenix, this shop on W. Indian School Road would be the ONLY place I would go for my cycling needs.