Bern had a market, but it wasn't that great. Didn't see one in Interlaken.

I really enjoyed the market in Rothenburg. I didn't mind the one in Freiburg (Germany), but maybe I just loved the town in general and it skews my opinion.

Munich's market was commercialized and terrible. The first booth was a teepee sponsored by the Arizona tourist commission. And it seemed like most of the people there were college aged folks trying to drink as much Gluwein as possible.