I had two crowns with Dr Schmidt in Konstanz (they are not open on Saturday though). Here's the website. http://www.drschmidt.de
Other people I know have used him too and were happy.
This was a couple of years ago now and I have since had check ups here in CH and my dental hygienist (who is very experienced) and the dentist both confirmed that the work was excellent and so I feel I can confidently recommend him.
I can't remember what it cost though, but it was over 1,000 euros per tooth, (perhaps 1,300?) but I remember that it was perhaps half of what it would cost me here (my dentist here is v expensive, even for CH)