I can never get enough of Colorado. In fact, it's on my list of places to settle when we retire someday. We go skiing in Colorado every March. Every year, we swear we're going to go somewhere else, but we always end up back in Colorado because it's amazing on so many levels. This year I'm extra excited because my dad is coming back with us. He's convinced that by next year he'll be too old to make it down the black diamonds. (No way, he's as chipper as a 20 year old.) So, we're taking him out for a week this year.
In terms of city living, Denver is nice, but I'd choose Colorado Springs in a minute. Pikes Peak scenery and small town city feel- you can't beat it.