I did have a 98 230 SLK with 4k but was totaled by a drunk driver. I purchased a 06 Chrysler Crossfire, thinking I would have the same experience and save money. No comparing. The SLK series Mercedes is one of the coolest convertible roadsters on the market. Performance, looks, roadster feel, with more class than most roadsters. I sold the Chrysler right away and began searching to replace the 230 with a newer 320 with no regret.
I love the handling of this car! The acceleration is more than adequate, as the car gets off the line quickly, and it accelerates hard. With the AMG Sport package, the interior is very pleasing with the machined metal inserts. At 80 MPH cruising speed across Nebraska, the gas mileage was 28. The cockpit is roomy enough, and every control is close at hand. So nice to have a convertible hard top, also, although the trunk capacity is limited with the top down. Big enough for an ice chest, though.
I've owned the SLK for a little over a year, and am very happy with it. I was initially attracted to the car because of its looks, styling, and impressive engineering. Supercharger provides enough of a boost for highway passing; otherwise, I would recommend a 320. Expectation met – with just one exception.
I find my 2003 SLK-320 always fun to drive. It's a sporty and a real head turner going down the road. If the sun is out, the top is down. Or 25 seconds later it can be a hardtop again. You'll need to watch the speedometer because it is truly effortless to get to and exceed highway speeds. I love the throaty sound when I step on the gas. The motor eagerly responds at all speeds with ease. Comfortable seats and ride with plenty of legroom. Almost intuitive handling in turns, curves and "other" manuvers. The cockpit has well laid out gauges and controls. I've had no problems to date.