A bit of a discussion about it in this thread here:
V6 (Pentastar) Catch Can
I personally just ordered one for my V6 because I'm planning on keeping it for a while. It does accumulate quite a bit of oil for our engines too. But if you don't plan on owning the car for an extended period of time, then most say it isn't worth it because you won't take advantage of it's long term function in keeping the engine a bit cleaner.