The Moonlander doesn't have a great thumb cluster anyway, so I wouldn't recommend it unless you have large hands. Prebuilts that you can get from Europe are (excluding keyboards without thumb keys like the Kinesis Freestyle Edge):
- Dygma Raise, the Defy is delayed again, so it'll probably take a few months before you can get your hands on one. But I think it's better to wait if you want to go with Dygma, because column stagger is a large improvement over row stagger.
- Custom build by Falbatech.
- Kinesis Advantage2 or Advantage360. These are the most ergonomic keyboards that you can get in Europe if you are not willing to order something outside Europe (like the Glove80). Lots of ergo shops have them, so you may even be able to try it out in a shop or with a 30/90 day return period if you find a good dealer.
I recently switched to primarily using a Glove80, but the Kinesis Advantage keyboards are great. There is a learning curve, but it is definitely worth it.