Splat Action (Good Field), Warpaint Outdoor(horrid), Paintball Palace(pretty good indoor), and several more in Colorado
This is a relatively new field in the Oregon area. My first time playing there today was definitely enjoyable. I've been playing for about 9 years now and I can honestly tell you that these guys have their stuff together.
First of all, you can buy practice paint there for only $35 a case! Which is good though teh paint's not that great. They also have rampage and premium for $45 and $50 respectively.
Second of all, two great airball fields. These were really fun to play on. They also have a canyon with tons of crates and tubing set up, making ti pretty sweet to play on, though games take longer usually since people can move up like crazy due to the massive amounts of cover.
Thirdly, the people are really nice, they make great lunch, and overall they are competent and try to make your stay there comfortable. Refs are also pretty good and aware.
Fourthly, if you rent gear, they have nice rentals, Tippman 98 customs and spyder's, both extremely reliable guns. Any problems with your gun and they'll fix it for you. One of teh ref's even gave his hopper to a participant who's hopper broke.
All in all, this place is good, it's cheap, it's well built and teh people are nice and competent. I'd say, go here and have fun!