I like Haruka (Uranus) most. Of course, the relationship with Michiru has something to do with that, but she's the most realistic, down-to-earth Senshi, who knows and accepts that sometimes bad things happen, and you can't ALWAYS save the world.

Plus she's lesbian with Michiru.

The Three Lights are awesome as well. And nobody - and I really do mean nobody - can compete with Iron Mouse.