A few things that cause CH gear to stand above the rest.
1) Unlike other sticks including the Saitek's Xxx's, they are designed to be easily maintained - and while they rarely need it, if you need to replace a pot, it's wicked simple. Saitek's are meant to be thrown away rather than opened, and they fail with distressing frequency. At least the 2 I had did. And the herd of cheap sticks are all meant to be thrown out if they become troublesome, too.
2) The mechanical construction is a cut above too, and you get greater control and precision. And when compared to the Saitek's I've had, the stick is tensioned correctly - it takes the least force to move it from center, with increasing tension as you increase the throw. The Saitek sliding disk is the reverse. Compared to the herd of sub $50 sticks I've seen, they are simply better built, with much less slop, allowing for greater control.
3) Because of the quality of the construction, they last a long long long time before they start giving you trouble. (In most instances).
Now, having said all that, is the CH gear I have perfect? No. My Logitech Wingman Force (not to be confused with the Force 3D piece of dog doo) was a better stick, especially because of the way they implemented FF. My Microsoft FF sticks were more precise, and fit my hand better, and I'd still be using them if they hadn't had a design flaw that caused the hat switch to inevitably die (and because of the design, by the time the switches fail the plastic was worn to where it was a problem, too.)
And while $150 for a stick is a lot, given that a folks with CH gear tend to have used them for time periods of up to a decade (or more) you end up paying less in the long run than the yearly to bi-yearly cheap stick replacement.
What I'm hoping for is that the Warthog is going to be what I expected the Cougar to be, but that it wasn't.
<S>