I saw Inside Llewyn Davis on Friday, and I really liked it. The title character (played very well by Oscar Isaac) is a jerk, but you can see why people put up with him. There are juicy parts for Carey Mulligan, Jeanine Seralles (an actress I'd never heard of - the Coens know how to find talent) and especially John Goodman. The cast does all their own singing, and it captures the mood of early 1960s bohemia so well.
I also saw The Wolf Of Wall Street, and although it was well-made and had a great cast, it was just plain unpleasant. The best scene is the early one with Matthew McConaughey
ETA: Inside Llewyn Davis also has a very cute cat who is central to the plot :)