While I agree that Highlands Ranch, Columbine, Lone Tree, Littleton, Aurora, etc are a bit suburby. . .I kind of think Denver is a subrby kinda city. Well at least compared to Washington DC, Boston, Chicago, etc. Anyway. . .I think kill the headlights has kids (??). . .which would make living south of Denver probably more reasonable/affordable.
I am actually from Boston, though I haven't lived there for about 4 years. I love suburbs. I would never want to live in the actual city again. And I agree with the comment that Denver is a suburby city. The actual downtown area is really small, but suburbs and cookie-cutter houses extend forever. But, I like suburbs, so that is ideal for me.
I love Highlands Ranch and Lone Tree because the cities are planned out so well. When you make an entire city in 20 years you have the opportunity to plan it out right. I love the twenty feet of grass on the side of the roads, with the curvy sidewalks through the grass, I love the bike trails. It is a great place to live. Also, they have many Qdobas and Chipotles, and I could live on those fabulous burritos! And you get a much larger house for less money than within the city limits of Denver. And I like newer houses, I grew up in New England where all the houses are a hundred years old, so the new stucco houses are gorgeous to me.