I flew a Super Kaos from 1974 - 1980. I still have it in fact. It is a great flying plane but I have to agree that it is outdated by many other planes that can outfly it now. With that said it's still one of my favorites. I had a S.T. Blue Head .61 in it which made it seem like a rocket. The landings were always greasers!. I wore the tread off the DuBro wheels

The differences - First there was the Kaos designed by Joe Bridi. slab sided, tapered wing, engine not cowled. It flew well. The Super Kaos was a refinement of the first. It featured rounded corners, wing fillet fairings, a cowled ine engine, shorter wings, and retracts. Both of these and the 40 size versions were Mfg by Bridi and later sold to Great Planes. The Utter Kaos was another Bridi design but it was sold by another company - I think Hobby Shak. Basically the same as the Super but with diferent wingtips adn tail feathers. The rest of the Kaos versions were mods done by others.

If you build the Super, you will notice the famous Kaos wiggle at high speed. It never bothered anything but when you got it, you knew you were going too fast! I once lost the Vertical stab in a mid air and was able to get it back by keeping the speed way up until landing.

Do build it light.