Go with the mopar one, i have it. It does the job of pssshhhtt

 

I am more than happy with my Mopar BOV and I always recommend it. All the other aftermarket BOV's are squeeky sounding to me, some are not too bad however and sound pretty good, but the Mopar BOV sounds different than all the rest.

 

You should try the Forge Blowoff valve, it really has a nice sound to it and ,ount on the stock location of your diverter valve.
Its a nice polished piece (f or the bling bling in you) and installs in 20 minutes (if engine is cold)
check em out at http://www.forgemotorsport.com