The only reason I would ever prefer Blockbuster is the new policy of NO late fees. But 20/20 is a short walk from my house, and they have cheaper prices anyway. Just turn it in on time ;) .
Pretty much the same selection as blockbuster.
Good selection of games, dvds, and about the only place left with a VERY large selection of VHS.
Also a VERY large (private) room where they sell "adult" videos. (Almost half the store)