I agree that the Maggies need juice. I heard the F-50s and thought that the mid range was poor sounding, but it was probably do to the system and set up, although I still think they should have sounded better. I would think that the Vandy 3As would have great mid range? The Maggies have a narrower sweet spot and will not do rock that well. Speaker selection should also be based on your musical tastes, room set up, equipment and your listening position. The Maggies will need to be out into the room maybe more than the other speakers IMHO.
Happy Listening.