Planet Waves O-Port
 

Anyone used one of these? If so, is it worth the money?

http://www.planetwaves.com/PWOport.Page
http://www.youtube.com/watch?v=6qIObE7eUCo
http://www.youtube.com/watch?v=5ze_Np09OZk
http://www.youtube.com/watch?v=L6go75XOMhs

I imagine it'd be pretty easy to make one of these yourself. I've got about 30 of Bobbi's old XXL diaphragms; I could just cut a hole in the middle of one and slot it in.

I ain't ever even heard of this that there thang. I doubt it can make THAT much of a difference. What's the retail price?