I also got a pair of Tour Ultra's a while ago to replace/upgrade from some Dexter 6's. I found the sizing to be pretty close between the two companies. The rise of the heel is lower on the Tour Ultra than the Dexter. I felt a little uncoordinated at first because I was so used to when my heel hit the ground when I was wearing the Dexter, but it took just that split second longer to touch ground when I first wore the 3G. It was weird at first, but now that i'm used to the new sole height it is fine. They are comfortable, and feel not quite as stiff as I found the Dexter to be, even though I really have no complaint with the Dexter either. If anything the 3G is a little smaller in the toe box of the shoe than Dexter's, so if you have wide feet you may want to carefully consider that. My feet run a bit narrow to average, so I found the 3G more to my personal preference that the roomier fronts of the Dexter.