I vote for Apache Honda in Phoenix, i drive from Mesa just to deal with Troy in service.
i would check around with the service department and see what kind of work they are doing. Hopefully they have a decent mechanic with some knowledge on why things break. Some dealers just do exactly as the manufacturer says and dont ask why or understand the recalls or typical problems. drop in on some service departments and see how they conduct business before bringing your toys there.
You dont HAVE to service your machine at the same place as you purchased it, but it helps the relationship if you do.
A great relationship with the Service department is worth a few extra hundy when purchasing.