I think in order of preference for this poster:
- Rolled, Double Sided, US version
- Rolled, Double Sided, International version
- Rolled, Single Sided, US version
- Rolled, Single Sided, International version
- Folded versions
Although I don't think there's much between US v International (the US version usually has a ratings box and maybe a different release date, so some collectors prefer the US version).
Be careful of buying singled sided rolled ones from random ebay sellers, as they could be a reproduction (especially if they're 40" long as I think this one should be 41" long).