Napster vs iTunes vs Limewire

My choice between napster, itunes or limewire is itunes. The main reason why I choose itunes is because it is legal. If you get caught using limewire illegally, there is big fines and jail time. One reason why I don't use napster is because it isn't that popular and is more difficult to use/understand. Another reason why I use itunes is because of the sound quality. On limewire, the sound gets crackly and "fuzzy". Although itunes can get expensive between the songs/tv shows/movies, I think it is the best choice to use.