Of the patterns on your list ACU < tri-color desert < desert marpat. However, the best pattern I can think of for Arizona is desert DPM. I have run all kinds of patterns (MC, solids, woodland, tri-color desert) but DDPM was the first camo that I was complimented on by the other team for its effectiveness. If you are lucky enough to get your hands on some, buy it. For it's rarity, it's actually not much different in price from domestically available patterns (definitely cheaper then Multicam). If you want, you can get some on Ebay, but the make sure to get that janky UK sizing right.