Used to watch The Americans but struggled with the last series a bit. I think with American TV the fact that they normally have lots of episodes in a series is usually a good thing. But on occasions, when the series is relying on one major plot point (They are Russian spies, he is a serial killer) then you can get a bit of filler and padding and I lose interest. I think Dexter, Cold Case, Bones, Grimm, True Blood all fell into this trap as well.
Also am with you on Breaking Bad. When it came out the first time I read the hype and watched the first 2 episodes but just could not get into it. I always tell myself I will try again at some stage as so many people rave about it, but to be honest I suspect I won't have time to do so.
Have got The Fall lined up to watch on Sky which I am looking forwards to. Am also enjoying Cold Feet which is a lot better than I expected it to be after such a long time off. And does Great British Menu count as well? slight guilty pleasure.