It was mentioned above. I'll hit it again. Your BOOTS will get damp on a long trip. You need socks that will still work if a bit damp.
I use a wool blend. Use any brand you want, just be sure they are comfortable. I really hate seams across my toes.
Try to dry your boots as much as possible each night. I stuff dirty laundry in them, or those micro dust cloths, this will draw out some moisture.
Someone used christmas lights to dry his boots. Very novel.
I've seen a boot insert, looks like an insole, that was a boot dryer. These will need a current bush.
A dry shoe pays off when it starts getting cold.
Good riding to ya.