Ive been a big fan of Cycleport, formerly Motoport for years. I currently have a pair of the Voyager AX overpants and have had great sucess with them. They have some high density foam in areas, easy in and out and the best thing, waterproof.
I will start riding full time again in the next week or two and our weather will be in the high 30's to low 40's at night, the Cycleport gear works great in these temps even in pouring rain.
Heres a link;
nullVoyager AX Pants