Most square feet for that price: Shenandoah, Reatta Meadows
Nicer homes: Woodland Hills, Spring Meadows, Castlegate I
Newer but less square feet: Castle Rock, Castlegate II
It truly depends on size, area and style that you are searching for.
inventory is very low this year so having a good Realtor who watches the market consistently and has a team of agents that share listings in advance will help!
Full disclosure: I am a Realtor