Summer only got here last week! Why are you thinking about winter?

Peter White cycles has a pretty good comparison guide here: http://www.peterwhitecycles.com/studdedtires.asp.

Those look like nice tires. That's a lot of studs for the conditions you normally ride, but better to have too many than not enough.

I've given up on changing tire pressures to match conditions. Inevitably, if I pump up the tires on a snow-free morning, I'll wind up running into a patch of ice somewhere and wishing for lower pressure and better traction.