I live in tucson so i've played at both desert fox(6) and sudden impact(9).
This field is very interesting. they have both an airball and a recball field and are very strict about safety on both. further they do not allow bunkering on the rec field and it takes for ever to devide teams, which they do EVERY game. on the air field they play about 4 vs 4 and you can just play whenever you want, which is nice but the field is so small that you get shot instantly if you play with more than 5 vs 5. their prices are pretty cheap though($8 for field, $8 for air) and you can even bring your own paint, though they sell pretty good paint there. their also pretty loose with their chrono as long as you are under 300 they dont care.