Now that is what I call a Movie Poster book....
Seems quite the ticket Anthony, I would go with the wood stain, as I like dark woods....
I'm also leaning towards the stain - I want it to look like a piece of furniture, you know? Something classy. I wish I could have made the covers with something nicer than plain oak panels (the spine is actually a furniture-grade maple) but to keep down the cost and the weight I didn't have much of a choice.
I think I'm gonna steal your idea and build mine (if you have not patented it yet 
)
The only thing I lack is that I just couldn't find the Mylar anywhere as yours, with flap and binder holes.
The mylar sleeves are really the most important part, because without them I wouldn't need a binder in the first place. The manufacturer I originally contacted doesn't make protective flaps anymore (I don't understand why. They say they use a different film makes it impossible), so what I have is what I get until I find somebody else to make them.
However, if you
do find somebody to make the sleeves, you should try to have a friend go in with you. They get cheaper the more you have made and are quite expensive at first. When I bought 50 sleeves (25 for me, 25 for my friend) it came down to only $10 a sleeve. But had I just bought the 25 for myself, it would have been something like $15.
So either buy a ton or split it with a friend.
Edit: If you're looking to make your own, I should probably share with you everything I learned through trial and error.
1. Don't overestimate how thick the binder should be. Fifty posters in a pile is barely an inch. My original design was spineless - more like a notepad - and I intended to have pieces of plywood threaded onto 5" loose-leaf screw-lock rings. Obviously, the rings were enormous and completely impractical. My rings are only 2" and they're still bigger than I need them to be. Even if I had 100 posters, I wouldn't need anything thicker than 2" rings.
2. I pulled my binder spines from "heavy-duty" Avery binders. Normal binder rings are perfectly round, while these are D-Rings, and the "normal" ones don't hold the weight of the sleeves well. To keep your posters secure and prevent them from moving around, you'll almost certainly need the "heavy-duty rings".
3. Don't use plywood. Plywood isn't thick enough. The hinges on the binder tab need a feasibly long screw to secure the connection, and no screw long enough is short enough for plywood. The oak panels I chose are heavy, but still make for a perfectly mobile binder, and are what I should have just done in the first place. It stands strong on its own two legs and I don't have to worry about it warping in the humidity. I tried three different kinds of plywood of varying thickness and strength, but you really need something at least half an inch thick.
For the hinges, use T-Hinges.
Also, obviously, don't use pressure-treated wood. The chemicals will leech and damage your posters.
