As part of my woodworking journey, I have experimented with many different woods. Tendency for dropouts, Bruce's original question, is one of the characteristics I have watched. Other characteristics include: how well they take a finish, tendency to have fuzzies, hardness, and of course, finished appearance. Along the way I have developed a sensitivity to wood dust, I get a skin rash from exposure.
I have worked with walnut, pecan, hard maple, cherry, mahogany, red oak, monkeypod, paduak and mesquite, etc. I now have ready access to end pieces of mesquite, so that is my first choice for any project, but it is not appropriate for many projects.
My biggest frustration was in trying to do fine fretwork using 1/4" monkeypod and my conclusion is to not try fine fretwork with 1/4" anything. My second conclusion is that monkeypod might have a slightly greater tendency for dropouts than other woods, or maybe it was just the piece of monkeypod I was using for that project.
For projects where dropouts are a concern I would be more comfortable working with mahogany, hard maple, cherry and walnut. But there are many other factors to consider.
Apologies for rambling but I enjoy studying wood.