I'm on my second set, my first ones lasted two seasons. I've been very happy with them....they're superlight and remain comfy all day. Good for winter camping too. My only complaint is the inner fabric. It seems to "pile" a little in the heel area. Maybe its a sign that I need shim my heel a tad under my footbed.
There are other brands out there as well. These are the ones I'm familiar with though. Good luck!