While I am applying in next year's cycle, I am a Florida native with both of those schools on my list. I have actually visited/toured Miami Law. and spoken with one of the deans. If the metro scene is for you, you could do much worse than UM. The Coral Gables area of Miami is nice, and the campus is downright beautiful. The law school is tucked away in a corner of the campus and is pretty self-contained, which is a good thing.
As far as FSU v. Miami is concerned, it is all about "The Benjamins." Where can you attend more cheaply? The cost of living in Miami is by far the highest in the state. Tallahassee is quite a bit cheaper. FSU has a slightly better reputation state-wide than does Miami (according to attorneys I've spoken with), but UM is king in the Miami area. If your scholarship makes the two tuition amounts equal, I would lean toward FSU due to their reputation and much cheaper cost of living. If not, then UM is not a bad option.
There is a 3L at Miami Law who posts on this board occasionally. His name is Derek Hibbard.
I hope this helps.