Prior to these, I was on some older T2's that I thought fit me pretty well. When it came time to retire them though, I figured I would give BD a shot. I'm glad I did. After a year of skiing on these, I have no regrets. These boots fit me better than any other ski boot I have used (including alpine boots). They are a little wider than the Scarpa boots which was a pleasant change, and while out of the box my toes were a bit crunched, I took them in for a heat molding and now they are form fitting. 4 buckles is bomber and the BOA system is awesome (not sure what the durability is on it though, but no issues yet). As far as skiing on them, they have no issues driving my skis around in any conditions and the flex is quite smooth yet responsive. I agree with Bill's comment below, they are stiffer than the T2's, and as a result, I have noticed an improvement in my skiing when taking a more aggressive attack at the mountain. Ski/walk mode flip is a little cheap feeling, but it is still there after a year of abuse. A great booth though and I cant say enough positive things about them.