Can anybody recommend a good middle-of-the-line brand pepper grinder that will grind coarsely?
Get the Magnum Plus Peppermill made by Unicorn. It was picked as the best Peppermill after comparative tests of various Peppermills by Cook's Illustrated. The Magnum Plus produced the most ground pepper per turn of the peppermill, has a large capacity and is easily adjusted for various grinds (coarse, fine, extra fine).
Amazon has the Magnum Plus listed
You can do a Google search for other sellers of the Magnum Plus Peppermill to compare prices.
Note that Unicorn make a Magnum Plus Peppermill and a Magnum Peppermill. It was the Magnum Plus (it's larger than the Magnum) that won the tests conducted by Cooks Illustrated.
I purchased my Magnum Plus Peppermill for $35 plus tax from a restaurant supply store in Los Angeles.
I have two Magnums -- the little one for the table, and the big one for the kitchen -- I love them both, and will never buy any other kind. Actually, they will probably outlast me, as they are very well built. They're also easy to load (large capacity) and extremely easy to adjust.