I like Shakespeare, I really, really do. At school, I was one of the few who actively was quite joyful when we went to see his works acted out, or read them in class, so I don't want people to think I just "don't get him". But, I struggled a bit to see this as one story. The first act was excellent, dark and intense and a certain character was delightfully hateable. However, after the first act, it just all went very down hill for me. I know I'm not expecting realism here, but the whole plot just became a little too far fetched by the final scene, especially the very ending (you'll know what I mean if you've read it).
On the whole, it's worth a read, but it definitely isn't my favourite Shakespeare, by a long way. Aside from "Exit, pursued by a bear", of course.