I have the Coldfront pants and jacket. Love them. They've seen quite a few backcountry elk hunts in November snow and heavy rains over the years.
I wouldn't say the run small. Not for me. I wear layers underneath them on the really cold trips. The built in belt and suspenders make it easier to adapt them for your specific needs. I'm 5"10" and 175lbs and have extra room in the Large size. Mine are older, so I can't comment on the current generation design.
They're heavier than I'd like. But then again I'm never cold or wet from wearing them, so I'll live with the weight. I dry mine out every night next to the stove.