I originally bought the Oris 200 with AER MD3's and Ultra Reference bass system using BD 15 drivers. Then I saw a pair of Oris 150's with PM4A's using AER cones for sale. My idea was to compare the sound of both and make a choice between the two. I came to enjoy both so much I couldn't choose just one. I also was able to find a pair of hybrid bass horns using twin 18" drivers.
I'm glad to see my system on your site finally. I feel like part of the Oris family now.