Funny how everyone starts advertising when a new guy shows up.
Steve-O, if you're looking for field, there's the Phantom monthly games, Hatfield on Sundays, Fear Farm on Saturdays, and the occasional big scenario game posted every now and again. The Phantom games are well run and usually a blast. I've heard positive things about Hatfield, but it is waaaaaaaaay in the northwest Valley. Fear Farm has it's faults, but is a decent field, especially if you're more to the Westside.
For indoor CQB, there's really only two at the moment: Tempe Paintball and VIP (Vanguard). Tempe is run by people that either play airsoft or paintball, so they tend to be pretty chill while still enforcing the rules. The clientele is mainly people from AA on the airsoft side and most of us are honest, play hard, and play fairly. The field is on the small side, but this leads to very quick CQB games where speed and tactical thought tend to win out over camping and (since it's a semi-only field) spraying and praying. VIP, on the other hand, is a very large indoor field with a great lay out and tons of corner, hallways, mouseholes, ect. to give you quite a few approaches and flanking routes. The reason everyone says to avoid it is (again) the clientele. Kids, aged 7-15, that won't call hits, cheat like crazy (flip to full auto in semi games), and generally ruin the experience. They also tend to steal things, ask a billion times to see your guns, and try to sell you crap. The staff isn't much better, mostly college kids that just want a pay check. The price point is a bit of an issue as well, since they operate on a "session" system, instead of a flat all day rate. If you want the full horror story, search the forums for "The Trouble with Vanguard" and be ready for some heavy reading.
As PSC said, there's a lot of opinions and everyone has their favorite places to go. Try a few out and see which one(s) are to your liking. Hope to see out on the field sometime.