Who has experience with a BMW Z3 Roadster?

Hello guys, I would like to buy myself a BMW Z3 M Roadster next summer (Bj. 98, 99 or 2000).Does anyone have this vehicle or any other Z3 experience? How many extra-scheduled workshop stays is the average? And will the artificial roof keep tight in heavy rain? Would you support or advise my decision to purchase a Z3 M Roadster? As an alternative I would take a Honda S 2000 Dear Greetings Gerhard