After 250k+ miles, the transmission on my trusty Toyota commuter car is now dust. I'm looking at an upgrade and found numerous MB options including a craigslist ad for a 2002 SLK 32 AMG hard top with 80k miles. Since this will be my first MB, I wanted to know the tradeoffs in performance, comfort, and most important, reliability. SLK gurus, if the money is all the same, would it be just as well to get something like a C320 or a coupe? I'd like something decent on gas mileage since I commute approximately 80miles round-trip per day as well as a fun car for the weekend. Thanks for the time.