I am replacing my old Vasque Sundowner boots that I have used for at least my last 4 pairs. The first thing I notice about these ASOLO's is they are more comfortable than my Vasque's.  I have owned these ASOLO 520's for about 6 months now and use them as general purpose boots just like the Vasque. Both are great boots, I believe these are even better. Better durability wise and more comfortable. I also like the traction. The Vasque seem to be better in terms of waterproof qualities. Even when the Vasque are worn out they are waterproof... The ASOLO's are good for waterproof qualities, the Vasque are excellent. I now insist on goretex in my boots.