I have a Porsche, BMW and Toyota and all of them have had work done by Sound Waves. The staff is careful, honest and do really good work. Their prices are good too - a rare thing these days, good service and good prices.
I shop stores like this (instead of big box stores) because the staff members tend to be more experienced and they really worry about their reputation and your repeat business.
I have shopped here for several years through several cars and feel comfortable going back.
I can't say that about many others.