I've only heard bad things about those sticks so far. Things like the washer on the stick scraping against the PCB (circuit board). This eats away at the connections and destroys the stick, rendering it useless. People with the TE sticks are saying they stop working after a few hours and there's a problem with the characters getting stuck in a crouch, even though the stick is centered.

Here's a video from one guy on giant bomb. link
There's an article on joystiq also. link