I had the Cabrio Module fitted to my old Z4 3.0i for about 4-years and I never had any issues or problems. A thoroughly good buy, I sold this with the car because at the time I wasn't 100% whether I was getting another Z4 or not. I now have a Z4M and I am missing the ability to close the roof with the key so I am looking at these modules again. I now have a choice between what I know in Cabrio Module or the gapTech. What are the views and opinions of owners with each type of module? Pro's and con's of both? What should I buy and why?