You have to ride em to be sure. I know it will cost money, but its the only way. We are fortunate to have a lot of good skis to choose from these days and it really comes down to personal preference. I have spent a bunch of time on the Z7ST, X7 and Strada and I know what I think, but key is what do you think? You might find a consensus that says the Strada is faster and the D3s generally turn like crazy, and I would agree, but getting your skier on it is the true test. KB