I have also played at the Blast Factory in Kokomo, River Valley in Yorktown, and ISA in Indy. The Paintball Barn is a fairly small facility, but there fields are nice.
I have played at the Paintball Barn on four seperate occasions. They have all been three man open class tournaments. They have a nice shaded area to stage in and plenty of room for parking. The fields I played on were spools and hyperball. They are really nice size for three man. They hyperball field is the nicest I've played on.
The best part about playing at the Paintball Barn is the staff. They are really nice people who want you to have a good time. They go out of there way to say hi and ask you how you are doing.
So if your looking for a place to get some tournament experience the Paintball Barn is a great place to start.