The interior of the SLK 32 is better than the SRT6's. I know they're laid out the same, but the materials used on the passgenger side and driver side arm rest are much much better. No elbow dimples in the SLK's compared to the SRT's. Plus the center console is soft leather instead of the plastic the crossfire has. That said the SRT is a better looking car IMHO. Only thing that would make me want a SLK32 over an SRT6 is the folding metal roof.