House of Cards was amazing, its about a power hungry Senator in Washington. Kevin Spacey does an amazing job.
The Shield was a great show, it got a bit dumb season 6 i believe but overall it was great. Again i cant recommend The Wire enough. A bit tough to get into the show first couple episodes but tough it out, you'll be hooked.
I watched Banshee for 4 episodes and said enough....The main actor sucks balls and the show relies on shock of violence and borderline pornography to lure the audience in. I'd take the show a lot more serious if they toned that **** down and concentrated on character development and story line.