Good bimax surgeon in Hessen, Germany?

Could you please advise me on a good bimax surgeon in Hessen?

On one hand I have seen a lot of controversy regarding Dr. Wolfgang Kater even though he appears to be one of the most common choices, though has plenty of reviews. On the other hand there is plenty of more local surgeons like Dr. Daniel Groisman, but I can’t seem to find almost any feedback or before/after photos.

I am trying to be very cautious, as I don’t want any complications after. As well as, I am really seeking for a doctor with an eye for aesthetics, since it is also one of the main reasons why I am going for it… Would appreciate any suggestions!