Here are Kilgore’s Labyrinth Lord books. I used a comb-binding machine at work to punch the sheets. I’d prefer coil-bound, but this is fine for now.
I like the digest-sized books better for game use.
I haven’t picked up a hard cover yet, but I will do so as soon as I can manage it. However, I fully expect that I’ll continue to use the digest-sized comb-bound book while playing.