Helmet Air Systems

Okay, who’s got the best Helmet Forced Air system? I need info from the guys who are actually using them…
It seems the Parker Pumper has been around the longest and has a two speed motor. (I like the idea of this.)
PCI has the Race Air system and Rugged Radios has one of their own as well.
How do these work in your RZR? Why did you decide to go with the system you’ve bought and do you like it or dislike it?
Thanks again for the help Fellas! (And girls?)