I'm a fan of cyanogenmod. My HTC one M8 seems to like it well enough. It's AOSP based which would certainly hurt the feelings of any of samsung's fans (fuck be upon touchwiz).
I am starting to research new phones though, mine's getting fucky and even after a wipe and clean install it's still exhibiting issues.
I don't use it nearly as much as I did in the states, so a basic android that I can customize should do the trick nicely.