I have been running my Stealth FX BOV for about a year. It is a very solid well made piece. You can adjust it to fully recirculate, fully atmospheric, and anywhere in between just by rotating the adjustment ring.

The install is pretty easy. All you need are some common tools that everyone usually has around the garage and about 15 - 30 minutes.
I took some shots with it next to the stocker:

Once it was installed:
Right now I have it set to fully recirculate because the reason that I bought a new BOV was that I wanted the improved throttle response and the ability to hold more boost, not the noise. I definitely needed to upgrade my BOV because the stock one just didn't hold up to my boost level after my Protune.
Here is the link to the website and the product in case you want more info:
http://www.gofastbits.com.au/index.p...ion=stealth_fx