Umm....
Pikachu,
Maybe you don't play with a hopper...but I do, and they are a lot bigger and will give you away faster then a scope(over the top of a bunker anyways).
And guys,
Scopes are not that bad...especially if you play at outdoor fields that are large. And like he said, he wants it to figure out who is who, and there is nothing wrong with that.
Inquisitor Tyrus,
Most fields that I've played at use a small, skinny armband to distinguish(sp?) teams, including Skirmish USA. I also played at a field that you were responsible for knowing who was on your team, but it wasn't really that hard. Also in your first post you mentioned the spread of the rental gun, and you wanted accuracy....well, you could spend all the money you got and you still won't be able to garuantee a shot(unless your three feet away from your target), the weak link is the paint your shooting. Don't get me wrong, you can improve accuracy, you just can't be a sniper, like in the military or on S.W.A.T. teams.
www.paintballgeeks.com and
www.xpaintball.com are some good cheap sites along with the others that were mention in the above posts.
Hope I helped you some.