In reply to markk:
I have the light Neo's and bought them this year for a week of touring and climbing
I used them on the haute rout and then on Pelisser Gully on Lachenal. They did climb well, and I like how they ski as well. I think the 3rd buckle isn't really necessary, and perhaps makes them a bit bulky. I might go for the tlt 6 in retrospect, but I'm not unhappy