I just thought that I would avoid some studying to chime in. I live in Lone Tree!
Overall, I like Lone Tree because it is pretty quiet, has good access to I-25, and the light rail. Also if you like to ski I-70, Lone Tree is also close to C470 which dumps in to I-70
I take the light rail to class every day, which I really like because it gives me a chance to relax on the way to and from class, not having to worry about driving, or paying for $3+/gallon gas.