I just recently upgraded to this binder after just using generic Office Depot 3-ring binders, and I really, really like it so far.
The downside is that it isn't a ringed binder where you can add sheets, but it holds 360 cards. You can also store cards front and back on the sheet without having them in the same compartment, which I love. The sheets inside are also really nice, and it isn't really much more expensive than buying a binder and sheets individually.
I personally like the fact that there are no rings in it, even though it is nice to be able to add/remove sheets. The rings always give me issues after a while.