[thstone]

It really depends on your preferences.

The SLK will look and feel more refined. Styling is a personal preference, but I think that the SLK looks better than the Boxster. The SLK engine will have more low end torque but the car won't handle nearly as well.

The Boxster engine loves to rev and it handles like a sports car should.

Both cars are equally snobbish and relatively expensive to own/maintain.

At the end of the day, either car would be a fine choice. Let us know what you decide.