I use the Schwalbe Blizzards for winter miles in 25c and Ultremo ZX in the better weather at those prices from Planet X you can’t beat ’em.
I can’t stand Gatorskins, found them quite dangerous in fact, not at all grippy. Infact I don’t rate Conti tyres for anything, had GP4000 when I used to race on a road team and didn’t like them at all…
Bigger aspect is rather not ‘which tyres?’ but what pressure? Some one up there saying 115-175psi WHAT! never! 100psi is all the air you’ll need in a road going tyre unless you’re 100kg. in 83kg and run 100 max in good weather and decent roads and drop to 80-85psi for rainy weather and winter training.