Mike, I'm like 90%+ sure we're going with Tremont again. Even if other places are cheaper, I doubt most of us would want to risk going somewhere that the rooms might end up smaller or the hotel staff stricter about the rules. I'd love to hear other people's first-hand reports of places, but if I were given the task of making hotel arrangements for a group of people (which I probably will again), I would not be comfortable choosing a new place based solely on a few webpages of info. The only other place I've seen folks here report on is the Sheraton, which doesn't seem to have any rooms available for MDF weekend.
As it stands, here are the rates for Tremont this year:
Thu: $144
Fri: $219
Sat: $239
Sun: $219