I have been using Darn Tough socks when on leisure walks over the last eight months, I used to get hot spots with Bridgedales but I do not get them now. For work I have been wearing Rohan over the calf length trekking socks, extremely comfortable, and I am on my feet all night wearing heavy Lowa boots.
I like a close, but not tight, fit, prefer merino with a bit of lycra to keep the sock in the right place. I found that my older Bridgedales would slip down and sometimes bunch up under the toe area, not a criticism of the brand, maybe they were just getting a bit worn.