Nah, definitely winter for me. Sharp, cold, starkly beautiful; rain falling and soaking you through, but the feel then when you get in and can get dry and have a mug of soup to heat you up. Frost and then snow on the ground. That burning-wood smell in the air I always associate with winter. I guess if I had to pick two good things about summer it would be that people in general seem happier and friendlier (even when they're mugging you and kicking you in the balls they have a smile on their faces) and that dem wimmen sure do look FINE.
Other than that, summer can suck my tiny, malformed dick.