Also check out Woodall's or Trailer Life Directory... both have good websites with links to rv parks.
I am very familiar with parks in the areas in and around Phoenix. While searching for our retirement park, we tried many. What are your interests?
Do you want to be close to shopping and restaurants? Do you want to be on the edge of town, or in a remote area? Do you want lots of activities? Most parks have some (or all) of the following: water exercises, tennis, golf, shuffleboard, baseball teams, lawn bowling, biking, ceramics, woodworking, glass crafting, lapidary, dancing, church services, choirs, scrapbooking, billiards, casino trips, jazz bands, etc....? There are parks with so many different "personalities".
What are your preferences?
Just be sure to reserve early... like "now" if you want to get the park of your choice.