Give the AMG SLK32 please First of all, Z3 is very ugly. SLK is very handsome. But yet, those BMW fans will say looks are subjective. Then let's look at stats. It's time for BMW to upgrade their performance, I was expecting this move ever since the SLK32 was out. I mean how can a BMW be slower than a Mercedes rite? But unfortunately, even with this new version, the M-Z3 is still a little slower than the SLK32, 5.0 vs. 4.9, 5.1 vs. 5.0, 5.2 vs. 5.0 depending on the source. M-Z3 has a higher lateral acceleration but a much slower slalom speed, and a quarter mile time a little slower than the Benz. BMW gains back some points in braking performance and gearbox, but Mercedes has better ride and ergonomics, plus the convertible hard top, giving you a coupe and a convertible in one car. So which will you choose? I'd pick the SLK for sure.