My very first JS was a saitek 290 pro I got at WalMart for 20 bucks and the trigger developed a dead spot in it, in less than a month. Saitek looks good but i'm very disappointed in their products.
The trigger on the first two Saitek 290s I bought broke in a month (to the day, it seemed). They have a two year warranty and Saitek sent me a Cyborg stick as a replacement one time. That worked ok but, seems to me, something broke on it after about 3 months. It might well have been the trigger button again as I don't recall the exact reason I remapped the stick so I wouldn't use the trigger button so much.
I used to use the trigger for firing all guns, with buttons on the back for individual firing of the #1 and #2 guns. I switched it so the trigger button fires just the #1 gun- something I don't fire by itself that often. Now my trigger button lasts forever.
Problem is one thing or another breaks down on the Saiteks after a few months. I've probably been through 8 of the dang things in the last year and a half to two years. The one I'm using now is still plugging along after maybe six months. That has to be a record for me. Then again, the stick has gotten so loose, with so much play in it it's gotten really hard to control the gun sight when aiming at smaller targets.
Time for a new one. They need to make their sticks more durable.