Area 52 (blows), Challenge Park Extreme where I wasted my money to sit around all day, Pekin which was pretty good, and Peoriabut it is closed now, and Chillicothe which was real good. Sudden Impact is probably the bet paintball field around because they have nice fields, good refs, and a very nice owner. The best thing about the field is that it is very safe and there are hardly any accidents.
I'd have to say that this is my favorite field I have ever played on. The game types there are varied so your not just playing speedball the whole time or woodsball the whole time. The atmosphere is very nice also because everyone is very nice and it's not very intimidating. I know I sound like a big panzee saying this but eh, o well.