Anything is a good counter to the queen's pawn opening from 600-800. Until you get to around 1500, openings don't matter much.
At a high level (i.e. GM), it's considered slightly more correct to play Nf6 on move 1 and c5 on move 2, but the Old Benoni is certainly playable up to master level.
What do you guys think of the Old Benoni Defense?
I think it's a pretty good counter against the queen's pawn for players around 600-800. I played tons of games with this opening, and I won most of them.