Agree with everyone on Peoria. We always get the lawn seats at each stadium. So nice for a desert rat to sit out in the grass
2nd fave is Scottsdale stadium. Great location and lots to do in the area that is walking distance.
We went to Talking Stick for the first time last year and it is really nice park.
During the week you shouldn't have too much difficulty getting tickets but weekends can definitely sell out fast.