I had a set of Rainsport 2s on my old 850R - I was the only non 4x4 to regularly make it into work during the bad winter of 2010.
You may be limited size wise, but if you want a fairly scientific test of all season tyres, then have a look at tyrereviews.co.uk. I've just bought a set of Hankook Kinergy 4S2 off the back of his review -
https://www.tyrereviews.co.uk/Articl...-Tyre-Test.htm