OK so I ended up with buying Michelin Pilot Alpin. Got them at a great price too IMHO. Quoted ~£1200 from most places. Got quoted £970 from one place so decided to go with them (this was when I originally posted this thread). Rang them up the other day to double check quote. They told me £860.
However when I went there yesterday to pay for them (in advance) he admitted to me that he had made a mistake. He has no idea where he got the number £860 from. Should have been £970, but as he quoted me £860, that's what he'd chart me! Oh happy days! Getting them fitted on Thursday. Can't wait!