Danny, the Brownie soda you found is leaning toward being a more commonly collected bottle than the other bottles you found. It is your choice what you collect though, everyone has different thoughts on what bottles they like and collect. I know a few people who even collect plastic soda bottles, though they don't have much of a history. Just saying that it doesn't have to be old to collect or even to be valuable. If you see any sodas with fully intact acls or deco sodas, pick them up, I would definitely keep those. Your rat poison is pretty cool btw.