red mountain is dope. i've been there for the past two seasons and it's sweet. it's got amazing terrain, but there are a few downfalls. the lift is slow and tends to break down a few times a year, the town is small so if you want a big party scene it's not the place (although the people that are there are super cool. whitewater get's more snow because the selkirks are a more dominent mountain range so make storms that just blow over red stall and drop more snow. but red has bigger, better, and more challanging inbounds terrain. and it's closer to town, so more convenient. as for backcountry, they both over some of the best, easiest to access you can find. with kootney pass only an hour away for some touring.
that's all i have to say for now.