I have to say that over the last 10 years I've most consistently purchased Nobis printen. A good…read moreprinten cookie all around (plain, princess and chocolate types). One printen cookie worth trying at least once is the chocolate with pink peppercorn. My printen tastes have shifted somewhat in the last 2 years, but there will always a place in my tummy for Nobis printen.
(Note - When I was here in the Summer of 2018 I conducted a blind printen tasting test of 7 different local printen cookies. We did the blind tasting twice (on different days). Four locals from Aachen and 2 from the USA were involved. We compared the basic printen cookie (no nuts, icing, or chocolate). Across the two blind tasting tests Moss and Lambertz consistently came out on top, with van den Daele a very close 3rd. Dreuven was of note - although people did not rate the basic Dreuven printen cookie highly, people very VERY much liked the Dreuven with icing (princess) or with nuts or chocolate (of course were not part of the tasting test but they were available in the room). Nobis was consistently in the middle. For the tasting test we unfortunately did not have Klein cookies available but everyone noted that they did very much like Klein. And of course, there were notable differences across the tasters. I myself KNOW that van den Daele is the best, but many people mistakenly preferred other shops. In the end, it was clear that each person has to try printen from many different stores to find their own favorite(s). That such a relatively large number of different printen stores have existed for so long also suggests stable between-person differences in printen preference.)
