I, on the other hand, truly enjoy the Teneighty. I have the Cusson pro model from a couple of years ago:
It's lightweight, soft flexing, lots of pop. Just having them on my feet made me want to seek out features to catch air off of. Which I do with great aplomb. Landings feel and SOUND solid.
A little sketchy carving on the hardpack due to its softness but I've managed to compensate with a change in the edge bevel angles. Trees, powder, bumps, and jumps seem fine. It sucks up pipe and kicker transitions nicely - an eye opening experience coming off of "normal" skis.
Only negative point I have, more of a cautionary tale, is the tail. Sometimes it hooks up and pulls the feet back when carving into softer wetter snow. Caught myself a few times. I think this is true of any twintip though.
As for the newer spaceframed teneighty. Well, it squeaks. I don't like the extra width when carving but it adds foregiveness with landings. Really good in powder. Even lighter than the Cusson. Despise the topsheet but I'm not its demographic anyway.