These have been a great tire. Still have life left but having to change as NSF has worn down due to alignment. They've taken me throughout Europe and all over Switzerland in the snow, no issues with grip whatsoever. I even slid into a curb, mangling the Alloy but no damage to tire at all. I've hit pot holes that would have destroyed a summer tire (from experience with Dunlop SportMaxx), but these has been perfect and survived without issue.
Would fit again if the price hadn't gone up £100+ per tire.
In comparison to the original Michelin Pilot Sport and Dunlop Sport Maxx it's had, there is definitely less wet and dry grip but that was expect being an all season but not to a detrimental level.
Noice wise, in Europe these are pretty much silent on the motorway. In the UK: M25 it's unbearable (due to road surface). General M6, M4 not really an issue.
Wear has been 27,000 over 2 years, could keep the 3 going for another few thousand miles if I wanted as they're at about 3mm but the alignment of my wheels has taken the one down to 2mm.