I upgraded from Cartels to Triads and the difference was huge, to the point where I couldn't spend more than an hour or so strapped in to my cartels but I could ride all day long in my Triads.
For starters, I am pretty sure Triads have been discontinued for 2011. And I also heard that they had some serious warranty issues with the triads hi-back breaking. Mine are going strong and I have no plans to get rid of them but I guess the premium they charged over the cartels was a bit much. Even tho in my opinion, they are FAR better.