I voted for Noel.
Duff may be a better player, but a 'greatest player' for me is someone who gave me real enjoyment, and I remember as a kid that Noel actually made me want to watch football (at Ewood, but footie in general). He may have beem in a relatively mediocre, but he created a buzz at school when we talked about the Rovers.
I met him once - after a hard day on the decorating job (his post football career) he came in the pub in Revidge where I was working. A real gent, no airs and graces at all.
RIP Noel, you were bloody good!