Velocity, Camp Pendelton, a couple others. Check the other reviews.
My company paid for about 50 of us to go out to Mr. Paintball a month or so ago. I'm hooked.
Having read some of the comments on the field here... well... they just didn't match up with my experience:
1) I didn't see any fire damage. I'd imagine they've been busy repairing their fields after the San Diego fires last year.
2) The refs with us were very good about making sure everyone had their masks on and/or their plugs in when appropriate.
I can't realy compare it to any other fields, I haven't got anything to compare it to. They have a number of fields (website says 10, I played on 4 of them). They had a single building on one field.
#1 One field near the entrance (bit of a hike from the staging area) was a "speeball" course (if I've got the terminology right). Small, netted in field with a lot of plastic barriers.
#2 A closer field was on a slope after a smaller hike. It had a combination of spools, trees, terrain (gulleys), and a building for cover. About 4 times as big as the speedball course.
Asymetric course. We played two games, and the same geographic side (nearer to the staging area) won both times. Could have easily been a fluke with only the two games played.
#3 We played on a course called "the jungle" that was aptly named. Dense underbrush, lots of trees, no artifical cover that I saw. A bit bigger that #2
#4. A long narrow field. Cover was almost exlusively cement barriers 3 or 4 feet tall. Lots of crawling around. There were a couple spools, but not many. This was the last course we played and it was starting to get dark enough that it was hard to see where the balls were going.
I didn't see any artificial lighting on any of the courses, but I understand that's pretty rare.