I like Landis. I bought a bike here almost a decade ago and it lasted me through four years of abuse and violence on the streets of Phoenix.
Every time I go, I experience the following:
1) Good, polite, patient service! Patience is huge for me--I'm not a quick shopper, and I don't know a ton about bikes. Other shops seem to think that this indicates that they shouldn't treat you nicely. Landis' employees seem to think this indicates that they should give you extra time and attention if you want it. And they also leave you alone if you indicate you just want to browse.
2) Decent prices on equipment. Okay prices on bikes.
3) Good selection of equipment! They had a Greenfield Stabilizer in stock. I'm happy. This isn't a common kickstand to just walk in and pick up.
I bought a new bike at a competitor because I had a budget crunch and I had the worst bike shopping experience of my life. Lesson learned. Landis is my LBS home from now on.
EDIT: Kristi D.'s review also indicates that they treat people with patience and respect. I'm glad to see this!