Would like advice on convertibles, I prefer big engines with plenty torque, hate revvy buzz boxes. The choices seem limited to 3.0 Z4, 3.5 SLK, 3.2 TT or 2.7/3.2 Boxter.

Boxter worries me regarding cost of any maintenance or repairs, should this be a real concern?.

I drove a TT but found steering heavy and dead - also seemed to want to straighten wheels on bends, had to fight this tendency. Is this typical of the TT?

I like the SLK, maitainence and repairs, same worries as Boxter. I prefer a manual is this an issue with the SLK?

Finally the Z4 - used to have a 3.0 Z3 but found the handling odd, tram lined a lot. Notice you have the Z4 with only 2 stars, is it that bad?

So which would you recommend, or do you have any other cars in mind?

Thanks.