I go out of my way to do more business at a dealership where I'm treated well. Years ago I had a clutch master cylinder fail under warranty while on a trip in the Sacramento area. A&S BMW in Roseville got a tech on the bike as soon as it was unloaded. They didn't have a clutch master cylinder in stock and we were planning on heading further south that day. They told me they would take one off a showroom bike. There was a recall that had just come out that I hadn't even received the letter on yet. They said they'd take care of it at the same time. They gave my wife and I a bike to ride and suggested a couple of good lunch spots. When we got back the bike wasn't quite done so we waited in their waiting area. The waiting area had a few computers with an internet connection, a fridge stocked with free drinks, nuts and snacks, etc. It was a very nice waiting area. We were back on the road quickly and everyone there treated us great.
Since that time I have ordered things online from them, and when I have had other warranty or recall work I have scheduled a trip through their area to have them take care of it when I could.
I like A&S. It's a big dealership with multiple brands and a good online presence.