Yeah loads! If you've got two days, i'd reccommend going round the corner to Inners too, but you could easily spend a weekend just at Glentress. The Red is good, although slightly worn in places. Last time i was there the top of Spooky Woods was demolished and being re-built but should be done by now. The full black is good, although the grading more refers to the length rather than the difficulty. Also easy to spend a few hours in the skills park!
It's even worth doing the new blue descent from the top car park as its fast and swoopy.
When are you going James?