I was wondering is the BMW z4 good? Maintenance?
--Depends on the vehicle and how it is maintained, reliability is hard to tell but my friend complained about the '04 Z4. If you maintain the vehicle, it will run you strong.
Are there any cars like the BMW z4 besides s2000 or z3?
--Z4 vs Z3 vs S2000. The S2000 is a much better car, if your looking for the 2009+ BMW Z4, they are a joy to drive. If its 08 or below, go with S2000 because of their superb handling, chassis, steering and engine.
And the Porsche boxter is it any good? Better than BMW z4?
--Yes great cars, but could have electrical problems.
Are there any good Mercedes coupes or roadsters?
--Mercedes SLK or SL
From Audi: Audi TT Roadster
From BMW: 330i, great car to drive and I think the best car to own.
NOTE: Based on your choice, your insurance will be high with Z4 or 3, S2000, Boxster, or Mercedes SLK, Audi TT.
AUDI RS4 RULES!!!