Rog, if you're after some 2500 give Tim at Circuit Supplies a call, he will do them at a very good price. Tel 01525385888I am in same boat - although 22,000 out of a set of XP8s isn't bad! Horrible noise, dust etc though. And that isn't being used 'lightly' 100+ laps of Bruntingthorpe and Silverstone/TOTB/30-130/Abersoch etc
Am very tempted by DS2500 at decent price and apparently about the same stopping power of XP8 but without the noise.