Challenge Park, Fox River Games, Rockford Paintball Games..
I'm not sure who the first guy is that wrote the review but i've been going to OP for the last year and they have ALWAYS had a chrono. In fact their field speed limit is 280FPS...so I'm not sure where this guy is getting his info. Also, most of the ref's there play for Amatuer and Novice teams and I've had nothing but GREAT experience's with the ref's there..especially for this years "muddy" CPSA tourney :)
They just bought a Sup Air Field and have about 12-15 total fields all together. How many other fields in Illinois can say that? Fields included woods (one of them was a 1/4 mile by 1/4 mile), speedball, and now Sup Air. I highly recommend this place because of how fast they turn the games around. Its not like you play one game and go back and reload...they play a minimum of 2 games everytime they take a group out. Paint is a lil up there but what fields arent?