Bill, whichever you choose, try to make it as affordable as you can. I've shot metal riser bows thirty-five years ago, and one of the best was the Grable design. If you could take a look at some of the older designs, you may see something you like.
I would particularly like to see one that was relatively plain with a slightly forward pivot area, like the old Grables/Shakespeare QT, or Carroll's. And, short enough to get a bow in the 56 to 58 inch area as well as up to about 60 or 62, depending on the limb length.