Depends where you're looking. WA is a big state. In the northwest, where we are, by far the best I've found is JR's RV Service in Sedro-Woolley. Very knowledgable guys and reasonably priced. They're just in the repair and maintenance business, not selling new rigs as well. Most of the others in the area are departments of major RV dealers (CW, Poulsbo, etc.)
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and ex-RVers.