So...who uses these and what do you like about them? I'm a post-bound girl, but I'm considering a D-ring album. What are the pros/cons of D-rings vs. post-bound? I know it's easier to move things around in D-rings. Can you fit more pages in the D-ring albums? Do the rings stay tight when closed so the pages don't catch? (I'm thinking how the cheapy binders always irritated me in school.) Also, what brands of D-rings do you like?