I have about everything you want to know about the Optica.
rcguy.tripod.com
I have Jack Bale plans which I have yet to build.
I have seen magazine samples of plans but yet to see the real thing.
You will see a testbed called the Frankenfoamy and a mini Optica on my site.
Both fly very well. There is a short clip of the Full Scale Optica on the mini Optica page. ( from the movie SlipStream)