You asked about the conferences...the OAC is the best, then the NCAC.
But there's a lot of variability there. The OAC has more consistently decent/successful programs than the NCAC, and has the better top end program, obviously. Wooster has traditionally been pretty decent but has slipped lately. I think a number of programs that are getting better have hurt Wooster's recruiting (Heidelberg, John Carroll, Case Western -- they took one that even Marietta I think would have liked to have had -- La Roche, Mount Union, Denison all are on the upswing. But the OAC also has a few programs that aren't very good. So I would look more program-by-program than conference-by-conference.
If you're interested in a school, get in contact with them. Marietta had a recent All-American and MLB draft pick whose grandfather initiated contact with the school. Of course, Tim Saunders worked his tail off once he got to Marietta, but you can be recruited even if they don't see you at a showcase or something. D-III schools have small staffs and they can't be everywhere. Worst thing that happens is they say no and you move on!
