Barty I have seen 2 side by side Voyages. Both are a little different. Both bought in the last few months. Mine seems whiter and I don't see a gradient. My husbands has a tan or warmer tone to the screen. We both can see the difference in both devices. Both have good contrast. You might want to try again and see if you get something less noticeable. Some screens are bluer or cooler tones, others are warmer. Some have a spectrum of gradients across the screen. I would try for one that has an even color across the screen even if it's not white to you. Hopefully you'll get one that's just right for you. I don't think it matters if they are refurbished or not. You just need the best match for your eyes.