I live in Seattle, however I just spent two weeks in the Phoenix area, a week in fountain Hills, and a week in the city of Maricopa. I preloaded my G5 with Fountain Hills fire, ( The rural metro conventional channels ), and the Maricopa County sheriffs office west sites and in Fountain Hills they both worked absolutely great.
I also put in the RWC sites and loaded the Phoenix fire K -Deck as well as the conventional A-deck channels.
When I left F/H, and headed south as soon as I got to Scottsdale I started picking up all of the RWC stuff and it came in clear as a bell. The nice part about this radio as you can load most all of the sites and the radio will pick the strongest control channel and performed flawlessly. For that system this little radio is phenomenal.
When programming, I found that if I program each individual talk group on knob positions two through eight, and once those are programmed then you can go back and make position one a group scan. Worked well
Maricopa PD talk groups worked well down there, as did the conventional Pinal County sheriffs office. I could hear all of the K-deck traffic on the south mountain site, and the Chandler site. I did not program any PD channels for Phoenix but I assume they will work as well as the fire channels did. If you don't regularly listen to Phoenix fire, you might want to put K-1 on a separate knob position or group as it never shuts up.
Again, I was blown away with how well this radio hears these systems and I cannot wait for the phase 2 upgrade so I can hear more stuff up on this end. Also note that I replaced the little antenna with a RadioShack 800 antenna and adapter and it brought my signal strength up tremendously. You can read about this in a post below. Hope this helps, good luck