Samurai Champloo has quite possibly the best first episode of any anime ever, but gets progressively worse after the first ten episodes. It's right up there with Noir in the "episode 1 was the most memorable part of the series" category.
OP has poor art but it really isn't about the art style. It's got a much deeper story than you'd think at first glance. That's really what impressed me. The story structure is very well organized. There are well defined sagas, each saga broken into several well defined story arcs. They do a great job of never letting the story go stale. I found myself liking it despite the art style.