Conti 4 seasons reckoned by a few.
Personally, I use the 32mm semi knobblies on the cross bike if I venture out. Much happier!
All depends what riding you are doing I suppose - I've been using a 23mm Michelin Pro 3 on the front and 25mm Conti Ultra Race on the back just because that's what I had kicking about in the shed.
I have bought a set of gator skins but haven't got round to fitting them - maybe do it just in time for Summer ! Mind you I was out the other week and we were discussing tyres and the guy I was talking to was on gatorskins and punctured whereas my fairly worn race tyres have been pretty good - one flat all winter so far - so who knows.
Gator skins for me, my original pair which i sold with my old bike are 8 years old and still going strong, plus when I put my lighter wheels and skinny tyres on the bike flies!!
Schwalbe Durano Plus for the winter.
but they don't come in pretty colours, which has to be the key criterion for choosing anything to do with the bike!!!!
Vittoria Rubino 3s for me.