Update: I selected a 501CM. Hi everyone, thanks for advice and comments. I wanted one of the 200 series, but the ones I saw for sale were more than I wanted to spend, the 50mm was really pricey, and the fact that repairs would be difficult or impossible steered me to one of the tried and true 500 series. I bought a 1999-vintage 501CM, back, and 80mm CB lens. It has the acute-matte screen. All is well and I have been using it quite a bit. I even got a really clean 50mm CF lens for only $410, which is amazing for precision glass and metal manufacturing. Here are two examples from Delta and Tallulah, in northeast Louisiana, taken on the older Tri-X professional 320 film.