I'd definitley hang the Jimi and the Marley one on my walls, although as a suggestion, i'd try making the creamy collored wave like things in the Marley one look more yellow, you know: red, gold and green. I still like that one best, it's very nice.
Here is one I just did of Jerry Garcia I'm glad you guys like them. I have a few friends that want posters made so I think I'm going to try it out and make a few.