The original cover is the best choice in terms of fit, material and its processing. Is not satisfactory that Apple here obviously - me completely incomprehensible way - saves on the magnets. The magnets of the prior mechanism extend only over half of the longitudinal edges. That's pretty stupid. It lasts only half as good. A vibration in the train or flyer leads mostly in the collapse of the otherwise very sophisticated design, since the open side is a weak point for the counterpart. 3 small magnets really so much more expensive? * Kopfschüttel *
Decisive for me was the full rubber with microfibre studded hinge. All cheap suppliers put unfortunately still on aluminum.