You can get some custom hand made one’s that are excellent but you will pay the price. As for off the shelf you have 3 choices. Hermle, Urgos, or Kieninger. Hermle owns Urgos and Howard Miller owns Kieninger. Kieninger’s are not cheap either. I put a replacement movement in a grandfather case I built and it was a Hermle. So that would be my first go if I needed a movement. You can find them at Black Forest Imports. Butterworth clocks also has them but he sells onlh to repair shop.
