I grew up fishing the Ohio, but the mon has alot of nice fish in it too. I found that the Allegenhey is hard to fish from the shore in alot of spots, I do have good luck at the dams in the summer. But for me the Ohio or the beaver are the spots to go. Really though all the rivers are connected anyway you just need to find a spot that has what the fish are looking for. I am sure that a 50-60# fish lurks out there somewhere.