They are all lovely, but different, and I think it is just personal taste! They are all three great places to visit quite apart from the music, so if you can't decide, draw lots or something, and whatever comes up, you'll almost certainly have a good time. You can also guarantee that whichever you choose there will be plenty of people who will tell you that the other choices would have been better, but you can spend your whole life worrying about "what if I'd chosen the other thing". If you go determined to enjoy yourself you surely will.
Have a great time!
Saro