I think MtGox is still the only exchange that takes the fiat side of the business seriously. Everyone else is so small that they don't have to worry about things as much, and so they're more susceptible to being taken down by law enforcement / losing their money transfer access.
I'm all for competition, but the competition is not yet there.
Bitfloor is registered with FinCEN and keeps their user money in a separate account, for whatever that's worth.