Just to finish this thread, I went for the new Cooper Discoverer STT. I am well impressed. They were awesome at Ribbo at the weekend, cleared really well and seemed to give great traction. on road they don't seem much noisier than my General Grabber AT2s and they don't seem too bad in the wet although I have noticed a difference in braking differences.
They were £85 each all in from Nene Valley 4x4.