It would help if the Sheffield Session Festival had some info on their website about what happened last year. Mostly, if you're deciding which festival you want to go to, you'll look at past form if you can.

Falkland is a new one (largely replacing the recently defunct Auchtermuchty festival) with lots of very good singers involved, but it's a long way from Manchester and it's a small town with not much accommodation, so you'd have to book in advance (though if you have a car staying in Cupar would be feasible).