I moved from a CLX-22 to an X3 Extreme-22. The difference is massive... No more aches & pains, pole is much. much easier to control & is more rigid. It does require more maintenance however - I wash through the sections every week and always clean the dirt off the pole hose when returning it to the van. A good investment IMO.
I also have a CLX-10 which I use for bungalows (probably about 30% to 40% of my round). This saves some of the wear & tear on the Extreme.