I saw The Prom and Ink this past weekend (along with Ain't Too Proud, The Lehman Trilogy, Kiss Me Kate and Tootsie). I thought that Ink was a great play if you want to learn a bit about a tabloid newspaper, and it has some music, too. The set is very impressive, although it doesn't change except for some additions now and then. Jonny Lee Miller was excellent.
The Prom was my favorite musical of the weekend. If you are interested in a touching comedy and a sweet musical, then see The Prom. I thought that Beth Leavel was fantastic, and other leads are great, too. The set is not particularly memorable, but the performances were.
I'm seeing Constitution next month, but from the stellar reviews, I hear it is a must-see, even without highly theatrical staging.