What do you like about your "favorite" retailer?

Hi everyone,
I'm having a debate with a few friends and I thought you might be able to help us out.

The question has come up about audio retailers: What makes your favorite retailer your favorite? What qualities, practices, etc. keep you going back?

Last, if you have a favorite retailer, why do you buy product from them instead of A-Gon?

Thanks in advance for your input!

Cheers,
Mike