Yeah, I second Alan's suggestion of getting the M60s (or even M80s) instead, assuming that you have a generous listening distance in your room. These floorstanders really shine when you crank up the volume. In comparison, the M22s might start to exhibit some stresses and sonic compression at extreme volumes, although it would be no worse than your Klipsch's.

You can always use a low stage/stand underneath the floorstander to raise the tweeter height a bit if needed.