 Hi, I've got the XDR ATTI and this is actually, I'm going to say it, my favorite ski. The reason it's my favorite ski is because it kind of does everything. So when you're away, you may be on the piece in the morning there and you may see a bit of powder and think, oh I quite fancy that. This baby is going to get you from off piece to one piece and it's going to have a seamless transition. So you're not going to pick up any difference in terrain and that for me is what really stands out in this model, it's its versatility. In terms of technology, it's got to be the CFX Super Fibre. It's a naturally occurring flax running through the ski interwoven with carbon fibre strands and without boring you to death, it's going to give you a better shock absorption. So that's the standout tech for me. I ride this length, in fact I was riding this only a little while ago. This is a 176, I ski this a bit longer than the traditional piece ski obviously because it's an all-mountain ski. I'm 5'10 on a good day and about 12 and a half stone so if that helps you choose your length then that's a good reference. I've been out this week on the Salomon XTR80 Ti, it's a ski I keep coming back to, it's an all-mountain ski with a pieced focus. I found that with a tip shape that's inspired from free ride skis, when I take it off pieced and get into that soft snow it's had great flotation. As I get back on pieced the main body of the ski is far more agile and nimble with more of a pieced setup. I found this is perfect for an advanced skier who's spending most of their time on pieced but is also wanting to go and play off the side.