Have several pairs. Calked and vibrum soled "pole climbers". Only reason I have several pairs is because work paid for them. I have looked at many and found these to be great. Get a couple extra insoles. If your buying calked buy an extra set of calks. Once they are broken in they are like running shoes, even at 4.5 lbs each boot.
If you get them let me know how you like them and which one. I am thinking of buying some winter ones from them.