I can't give an authoritative answer on costs,other than to say either will be less expensive than any mountain towns,like where I last was......As far as public transportation,Metro Denver has a light rail system and busses out the wazoo.....In the 'burbs and around the edge of "town" are "park n rides"..Leave your car in a lot,hop on a bus.......Or train,I guess,at some......One more possible consideration for you.....Last I heard,the states population hovered around 3 million,with some 2 million being in metro Denver,one of the consequeces being the brown cloud in the sky.....If you get towards the east side of town and look back to the mountains,you'll very often see a filmy,brownish smear of a cloud,over the city...The same dynamics that blow lots of weather OVER and beyond the valley,serve to hold and just roll the exhaust fumes and whatever airborne ejecta,over the city.....When it's bad enough alerts are issuedthe worst of which will prohibit you using your fireplace,without scrubbers,and I think even things like charcoal grills,for the duration,usually at most,a few days.....Being on the front range,I wouldn't be at all surprised to find that Boulder has a brown cloud too.....
Oh...The valley/weather thing...When a system blows over from west to east,sometimes they'll somehow roll back and hit town from the east or northeast.....When that happens,and it will,try to be stocked on supplies..It's gonna be a bad one........Those are the ones that dump 2-3 feet of snow at a time in town.......
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