Hi WF,
I'd rate them:
1) Schatt and Morgan: They've switched to 420 HC which bothers me a bit, but they're tops in fit/finish. There's enough mint old ones that you should have no trouble finding one you like.
2)Case Classics- Another great contract brand by Queen. These were produced in the 90's, but again, there's enough mint ones around that there's no problem finding them. Search Gus's posts here for some great eye candy.
3)Case-Bose: I haven't owned one, but have handled a few, and they were great.
You'll noticed I included a few out of production brands, the honest truth is that for spectacular fit and finsh most of the time, you have to go with a company's special editions.
On the commonly available brands, I'd rate them something like this:
1)Eye Brand.
2)Queen.
3)Camillus.
4)Schrade- Nice fit, very plain finish. They put out great special editions, and are great users.
5)Case- some nicely fitted, some yuk. Really a brand you have to handle in person.
I've left out a few brands, simply because I don't have enough expierence with them to comment.