We are in the same boat as you so I don't have prior experience, but DS accepted his FF a few days ago and chose MMI. The things we looked at (and I'm not saying theyre right or wrong) were: 1. He preferred a full year program to a half year which cut out NWP (though I would say there have been a lot of great comments about NWP and a great location) and 2. He wanted the military experience which ruled out Greystone and NWP and maybe another??). Also, we have a friend whose son attended MMI and loved it so it helped having someone we know personally make the recommendation. It's really up to what's important to your DD and your family.
I want to thank haleym too - your posts about MMI also contributed to his decision!
I do have a question for current FFs though - when did you all get your appointments? Will it be May again before DS hears anything? Just trying to plan ahead for another year of seemingly endless mailbox stalking lol!!