The plastic backing plates are great, no imperfections, fit the provided paper inserts, though not true A5, half a centimeter shorter.
The quality of the paper inserts exceeded my expectations. They are actually not completely white, but a subtle cream color and they are not actually A5, half a centimeter short. There is no bleedthrough or ghosting even with fountain pens. The printing on the paper is even, with no imperfections. Amazing paper quality.