I picked up a set of the 4D Quests a couple of weeks ago and can't say enough good things about them. They replaced my Danners which shit the bed on me. I expected more of a hiking boot feel, but these feel more like wearing a pair of sneakers. As to sizing, I've always been a 9D in Danners and the 9 Salomon a Quests fit the same. These are going to be my cold/wet wax boots. Gonna pick a pair of the XAs for the warmer months.