I finally decided to pull the trigger and trade in my '08 SLK. I loved that car, but it just wasn't built for someone 6'2" 220. The road trip to Las Vegas proved that. It's OK for a "grocery getter" but not for long trips.
I've been checking online for a couple weeks and found this little gem, 2010 C300 with Sport and P1 packages and only 17K miles. It doesn't have the zip the SLK had, but it's much more roomy and has a very quiet interior. The SLK suffered from horrible road noise on some surfaces.
Got a decent deal. $1500 over Blue Book for my SLK (excellent condition, low mileage) , $500 under Blue Book on the C300 and financed thru MB for 1.99% plus my first two payments were made by the dealer. It also has 3 years of factory warranty.
For once I didn't feel raped when leaving the dealer.