If you love track time Phoenix is the place to be in Arizona
As far as riding on the street..
There is nowhere close to town other than two roads that lead to the area's closest lakes,
Bartlett (nice but usually pretty rough and dirty) and Canyon (better road much more traffic and police)
Both are heavily policed by sheriff Joe's finest
, and fairly short.
No one I know other than full on squids ride fast within the city limits of either Phoenix or Tuscon.
Traffic pretty much sucks in either city
The key out of Phoenix is to ride more than an hour to get to the good stuff.
Much of it is closer to Tuscon than Phoenix
Tuscon has Mt. Lemmon just on the edge of town
It puts anything close (less than 30mins) to Phoenix to shame.
There still is the cop factor but the road is much better than either of the "close" PHX rides.
There is some pretty cool stuff in SE Arizona that rivals anything anywhere.
You just have to know where..
Just my opinon of course no flame intended