Many of the people here bought their speakers before Axiom started using the 1" tweeter in the QS4's. Because of this, we all used to say:

"You must buy the QS8 because the Qs4 was inferior in quality to the QS8."

Now that the QS4 has the same tweeter as everything else in the Axiom line, I think you will start seeing a lot more recommendations for the excellently priced QS4.