The double-layer options to test:
Running II: A mid weight double layer sock with a snugger fit through the arch. I chose these for a 5 mile recovery run in where it started pouring as soon as I headed out. These bad boys held up like champs. Nice mid range cushioning from start to finish, hugged mid-foot (which I love!), I didn't notice any heaviness/sogginess during the downpour, and no blisters! Maybe it was too short of run to make any final assessments but I was quite happy and will be wearing these again.
Cushioned DLX: The cushioned double-layer are heavier than all the other socks in this packet and seemed to run larger than the other pairs. I chose this pair for a mid-morning 12 mile run; a run that ended up being warmer than expected. My feet were warm but not overly so and these socks were very comfortable. I started to notice some aggravation of the blistered toe calluses towards the last 1/3 of the run but I think it was because I was focusing more on the overall feel from start to finish. I think these will be a nice
Coolmesh: According to the description these are the lightest, most breathable double layer. Light and cool they were but they also were the hardest on my feet. I had worn a pair of these in my last marathon and they ripped my feet into blister city. I was willing to give them another chance as maybe I had worn the wrong size or it was my shoes... something. Well I gave them a shot on a 9 mile tempo run. Yes, they were light but I felt the blistered calluses on both toes start to flare. By the time I was home and stretching the blisters were in full force. After many chances I'll be keeping these socks for the gym and short, short runs only.
Next up final observations after trying all the pairs again!