I had a soft spot for Mousetrap, but it's hardened over. Yet, if you've never been, maybe it's stil good.
It's music you don't hear at other dance clubs (even though relative to itself, the music sucks these days...). Crowd is huge -- get there before 10, 10:30.
There's definitely dancing, which is a good thing. The Backstage usually doesn't draw a big crowd, and it's a separate cover. But if you had a self-contained group of 6, 8, 10, say, you could have a great time...