I attended an HAI Instructor Pilot Refresher clinic in the year 2000 where I sat through a very interesting presentation by a Bell test pilot. He told those in attendance that it is impossible to get Vortex Ring State (Settling With Power) in a Bell 206. He claimed to have the test data to prove it. I can't remember the fellows name but it was a very interesting discussion. I don't buy his theory, but many walked away from the presentation believing it was true.