SLK 200K or SLK 230K

Hello guys, I would like to (will) strike in the spring and buy a SLK. Actually I also wanted to consider the successor model, but the photos of the rear shown so far, let me agree with this project. Now to the current model: Supposedly the quality with the facelift should have become significantly better, can SLK owners agree with this statement? How big is the difference in driving performance between SLK 200K and SLK 230K? Is there still no automatic air conditioning system for the SLK? Or is it? I am very grateful for tips or suggestions.