I have walked around the Burren on my own but have not done the guided tour. I know people who have done it and loved it. I suppose it depends on who your guide is.
I am not able to do this type of thing any more but living fairly locally (within 50 miles, local for rural Ireland) and in a walkers area on the Slieve Aughty, Shane Connolly from the Ballyvaughan based Burren Hill walks is highly respected and gets good reviews.
The Burren Peaks walking Festival is on 25th-27th Sept. and there are regular walks throughout the summer taking just a couple of hours with Heart of Burren Walks from two centres.
No problem Cark219. If you fancy a woodland/park walk then you might want to check out Coole park just Northwest of Gort on the Northeastern edge or the Burren area.