I remember when I got my iPad 4 and the color of the screen was a lot warmer - more red - than the iPad 3. Compared to the ipad 4, the Mini Retina is more like the iPad 3... colder, more blue. Not a huge difference and I don't know which one is more "accurate". It will take me a day or so to get used to the slight color difference, like it did with moving to the iPad 4 from the iPad 3. I assume it has to do with different suppliers of the screens. Anyone else notice this same thing? So far the biggest difference is in WiFi download speeds due to MIMO. It really is nearly 2x faster than my iPad 4. Upload speeds are only slightly improved.