This is one of the best constructed binders that I have had. I own 3 of them and they are holding up very well with constant use. They are not cheap but they are well made with quality plastic and metal binding rings.
This is a good binder in that it will hold more pages than the standard 2.5" binder. But the cover and spline of the binder are flexible making it hard to hang on to when filled.
We probably own four dozen of this style binder in all the different sizes. We started using them in 2008 or 2009. Never had one fail. They're vastly superior to all other style three ring binders because of the rubber hinges on the spine and the D-rings. They cost a bit more than other three ring binders but are definitely worth the extra cost.