I made a video today of me using the back tension method to shoot the 4 main types of releases. I was pretty much trying to show how no mechanical release in particular is inherently more accurate, as the method and consistancy of the execution far outweighs the actual "style" of release.

Just done using my iphone so not a great vid, but you get the idea

Derek

http://www.youtube.com/watch?v=IQpjuzkQXk4

Cheers mate, the quality ain't that bad!!!