Holy crap this turbo is AWESOME! Definitely worth it... I have a boost controller running 9lbs, a gutted primary cat, 3" all the way back after the flex pipe (no secondary cat), and a K&N air filter replacing the stock airbox. The turbo spools quick and seems to have a very consitant power band that starts to pull at about 2800-3000 and goes all the way to redline.
If you are looking for a cool upgrade that doesn't cost too much, generally speaking, this is well worth it! I'll have to post some videos soon.