I have both the Ch and the Saitek Pro.
I got the CH first and at first it was fine but as the shaft began to wear it got very notchy in the pitch, the plastic shaft feels very rough and bumpy now and is practically unusable.
The Saitek has been great and still feels very smooth to use. The only criticism I have is that the detente at center is a bit heavy but that could probably be fixed with a lighter spring or something, I may get round to that some day.
The only real problem I've had with the Saitek is the little LCD screen in the center started flickering so I stuck a bit of black tape over it. Its only a clock and stopwatch anyway.