I wonder how white balance is handled across these products.

I recently bought the InkJoy frame which is similar to what's sold at your link and the white balance is _awful_ and grey.

I naively expect these to reflect light like paper photos and be nearly identical in that regard when mounted beside each other on a wall, but I've been disappointed with the results so far.

Colour depth is not _as_ big a deal to me as the image simply looking natural among printed photos.