I prefer Las Vegas because the acting and the storylines are simply better. However, Miami has Emily Procter, and I've been in love with her for several years -- since I saw her on The West Wing. I think the lead guy in NY is good, but the plots are so contrived it's ridiculous. The last one I watched had them tracking down the killer because she tested her killing method on a cat that just happened to be exotic and just happened to have an owner cited for having an exotic species. While all of them have had those stupid coincidences cascading to a finish, NY seems to have the lion's share.