Showtime has done a good job establishing itself as the other HBO with hit series like Dexter, and Starz is trying to do the same. Spartacus and Boss are semi-successful, and now we have Magic City, which plays like a hybrid of Mad Men and The Sopranos, but it's nowhere near as interesting as that description would suggest.
I watched the first episode, and while Danny Huston's mobster character was a highlight, the whole thing was too slow and assured in its "quality TV" sheen that it never really became interesting. Also, when a show starts with a really cheap green-screen effect, I have a hard time getting invested.
I deleted the second episode off my DVR. I'll watch season 2 of Boss, but that's the only Starz series I can say that about.