I would go with a Bruce.
We have a Bruce-33 on our h37.5. It holds really well in any condition except in one anchorage. We were at a place where the bottom was a thick layer of small pea gravel. Of course, I don't think any anchor would've held in this situation. With the Bruce, we drop it once, and it has never broken out, even with a lot swing. We also have a Danforth-22 as a backup, but I can't even remember the last time we have used it.
We have a Bruce-33 on our h37.5. It holds really well in any condition except in one anchorage. We were at a place where the bottom was a thick layer of small pea gravel. Of course, I don't think any anchor would've held in this situation. With the Bruce, we drop it once, and it has never broken out, even with a lot swing. We also have a Danforth-22 as a backup, but I can't even remember the last time we have used it.