I've always found their range of beers to be reasonable.
We took serious beer-drinking friends from Leeds there a few years ago and they were _very_ impressed with the full range of Samuel Smiths, which they said was quite unusual.
For a reliable source of interesting/good local ales, I strongly recommend Dagda on Buccleuch St. They always have three good locals on tap, and they change regularly. It is also quiet and friendly. Well-worth a visit (some of you may remember it as the Proctor's)