When I was looking to buy a first gen Cayman I specifically looked for one without BOSE or PCM. I wanted something that looked newer and easy to upgrade. I'm still getting used to my Cayman S but couldn't listen to the CDR24 anymore so bought an Alpine ILX-007 and the installation kit from euro motorsports and couldn't be happier. Well, I guess I could be happier if I didn't have to still replace the speakers still, but it sounds much better now, even with the stock speakers. I tested the head unit with a small battery and downloaded a splash screen to make it look more like it belongs in the car. Also, the screen is mostly black, gray, and white and matches the car very well.