Same here. I decided I was sick of being cold in winter, so checked the Land's End site and found a long down coat that was rated to forty degrees below zero. Zipped and buttoned and with the hood up and fully snapped, it has indeed kept me warm with a wind chill at that level and an actual temp of around 20 below (it's never hit 40 below here, thankfully); with varyingly less fastening, it's comfortable to around 35 above. I got it in 2006 and it still looks essentially new. Mind you, I've never done anything like chopping wood in it; for that I might investigate something work-durable like Carhartt.

[Edit: I think my partner has had his Carhartt winter jacket for over 20 years. It's battered and frayed, but he's done railway-museum volunteer work in it most of that time, everything from hauling/replacing railroad ties to fixing boilers to building signal systems.]