I wouldn't waste my money buying a NEW OG Flex because it probably won't come with a receipt and even if it does it's probably not legit so it is basically a non returnable bat. Just get a used one in good shape for $250. That's what I did and I love the bat. The 2008 Flex is quite as nice but the J2 is a two piece bat with lots of flex. I just don't know much about the One to be honest. The J2 I swung was probably close to a 2008 Flex but a little more flex. Whoever you buy from on here just be sure to check their feedback before you give them any money.