Smartwool socks wear incredibly well probably like your Darn-tuff socks. With the right boots, I think you're right, you only need one pair of socks when walking and moving around. 20+ years in military-style footwear taught me how to survive cold and wet weather. It's different (for me) riding a bike for 8 or more hours at a time. I don't want massive heavy boots on while riding usually. Having several pairs of socks (7), thick to thin, ankle through knee-high, wool and water-proof (kinda)... allows me to stop and adjust for temperature and change/add when and if my feet get cold or wet. But... just like with gloves I am hoping someone starts selling a superior heated version soon that's nice and thin, flexible, light, energy-efficient and free for all.So just some thoughts as I read your post have you tried darn tuff socks and yes they're not cheap? If your wearing two pairs of socks their is good chance your wearing the wrong socks or foot wear or both. I wear a pair of Iron ridge boots from cabela's for winter they work great it was 13f the other day and they where fine. AS far as wool goes if it's the right blend and quality it breathe and regulate and wick moisture and keep warm even when wet. Layering is key and you don't many if done correctly.