Wenger accepts the other leagues have raised standards in Europe, but insists England remains the place to be.
"I would still say England is the strongest, because in England if they (clubs) want a player, they still get him.
"As long as that happens you will be the most powerful in Europe."
Pressed on whether the Premier League topped La Liga, Wenger continued: "England is the best, because there's something more here.
"It is not only linked with what you see on the pitch, but how you experience football. That is what I believe deeply, and when I speak to the players they say exactly the same."