I have had Sorel's in the past and they were very clunky.  These, however, are lightweight and extremely warm despite being taller!  I have larger calves (15.5 inches) and have difficulty finding tall boots that fit comfortably.  These fit the bill, plus I have been able to tuck my jeans into the boots without compromising the fit and comfort.  I read another person's review and I am considering doing this....purchasing some Ugg boot replacement liners for the bottoms of the boot because I don't like to wear socks.  It would cut down on the wear of the Sorel liner and keep my feet even warmer than they are when I wear them now.