A little bias but got to go with Denver
300 days of sunshine
Great restaurants
Awesome music scene
Redrocks
Housing is still affordable
Light Rail
One of the biggest things I notice when I go to different cities is that everyone in Denver has a thing. You are either a mountain biker, a skier, a climber, at hiker, a camper, some outdoor activity that you are way into. Sometimes all of the above but just about everyone interesting I meet is really good at at least 1 thing.
When I go to Houston (which we can all agree is the worst big city in America if not the world.) no one does anything. They are all fake as shit and drive Mercedes at 50k a year. I fucking hate that place.
Other than that Chicago, Boston, and San Fran. Pretty typical list, but none of them can beat the weather in Denver which is the best kept secret of the city. I had some cousins come in from Boston and they thought it was going to be like the movie Alive or Tibet or some shit.