In reply to Gotte:
Hi, I've got to say that GP is about the most uninspiring climbing atmosphere i've witnessed, the routes are just holds bolted to the walls, rather than thoughtfully placed to mimic certain rock types and the movement and technique required, as they get harder the holds just become smaller and less frequent, although there is a couple of good routes. They are building a new area but have been for for about a year, nothing really going on.
THe Barn though is very different, i live near GP but drive to The Barn as often as i need to, well worth it, excellent bordering, route setting is also excellent, and the atmosphere is very friendly and buzzing.
Try both, you may like them both equally!