The reason you can't find too many dealers carrying multiple lines is; nobody supports local dealers. Brick and mortar is as dead as Kelsey's Nuts.
The dealers who put their lives on the line, their homes their families futures, were done in by the internet.That's sad, but true.
The voice of experience.
Lrsky,Most highend manufacturers do not sell on the internet.Granted most used stuff is sold on the internet.Just my thoughts.