What about braking performance (or lack of!) in the wet? The centres on those tyres look awfully smooth...

LeonardSmalls - I'm not sure how good I am, but I seem to be fairly OK at getting up hills that stump a lot of riders in Exeter; saw someone yesterday who looked MUCH fitter than me giving up and pushing their bike up East Wonford Hill - I went past all the way without standing on the pedals (I find it harder to ride like that!).  1-2mph more oomph would be nice though