The REI Light Hiker II is a great hybrid of performance and leisure, of old-school materials and updated design. If you are on a tight budget, this is the sock for you. That said, there are better socks out there. The Darn Tough and the SmartWool PhD Outdoor Medium Crew Socks dry faster, are tighter-fitting, and handle warm conditions better. The Darn Tough is much more durable.
But the REI Light Hiker, aside from being significantly cheaper, has its own appeal. The REI Light Hiker can fit in a liner without compromising performance, and insulates better than either of the two mentioned above.
Finally, there's the cozy factor. If the Lorpen Primaloft and Smartwool PhD represent the cutting edge of performance, then the REI Light Hikers are the pinnacle of leisure. A sock rarely changes your perspective, but the REI Light Hiker can make any mesa, meadow, mountain or moraine feel like home.