Motorcycles Unlimited in Tucson is a great shop. First of all, they race with us out at Arroyo, which is cool. They've helped me a lot with my MZ, which is not a bike that is easy to find parts for or research aftermarker parts for. I had my bike in at their shop after a race weekend (for new carbs), and they knew I had a race the following weekend. Parts came in on Friday, and we were leaving that evening for the races. They pushed all other jobs out of the way all day and stayed at the shop an hour after normal closing. We picked the bike up on our way out of town, and they had it running great. The owner left messages on my cell phone on Sat to find out how the bike was running in practice, and wanted to be the first to know how it did on Sun after the races. Quality service & knowledgable staff at their shop. I was so grateful I got them dinner gift certificates as a "thank you."
I haven't had any major problems yet with motorcycle companies. Performance Bicycle has screwed up so many orders with us in the past that I don't order through them anymore. But that's about it on the negative experience side that I can think of.