Hi AJ,
I'm doing my PPL there at the minute and I'd highly recommend them, very friendly yet professional and you'll get into good RT habits thanks to ATC.
When you come to do circuits you may find yourself orbiting a fair bit and not getting in as many landings as you might with a smaller airfield due to commercial traffic getting priority.
Lessons are £135 an hour and membership is £85 a year, my instructor (a chap called Jag) is brilliant, can't comment on any of the others I'm afraid but I've not heard any horror stories.
Hope that helps
!