Check out the Strava heatmap for that area, tons of great riding.
http://labs.strava.com/heatmap/#12/-...2748/gray/bike
Dynamite Blvd/E Rio Verde Dr has some nice climbing. North of that is Cave Creek with more hills, south of that will be more Scottsdale, probably a bit more traffic, the closer you get south to the 101.
E. Sonoran Desert Dr (west of Dynamite) is a great ride, fairly flat, but nice views, new pavement, and wide bike lanes.