Just had a routine oil change done on my Porsche Cayman S, and like always the folks at Griffin Motorwerke delivered impeccable service. They're not the cheapest, but they pay great attention to detail, treat every vehicle like it was a priceless supercar and provide a white glove level, ultra-competent experience in all aspects. I feel extremely confident in bringing my baby to them, and will continue to do so as long as I can afford it.