I've been paintballing for a very long time. The field out at Stanfeild is awesome, to say the least. But Jim is a rip off and he doesn't have the right to argue with people because they didn't buy his paint. The field is on public land and he has no authority to kick someone off unless they are being a public nuisance. The field is great, but just make sure you hide paint that you didn't buy their.
PS The paint he sells, I would rate lower than Wal-Mart paint.