I won't go down the road of actually recommending a tablet, but when I was looking around for a better one than the one I was using, the iPad Mini 4 -- "better" meaning brighter -- the iPad Mini 5 was my first consideration, at around 500 nits. In 2013, there was Nexus 7 that had 583 nites. Go figure. Then I found out that the iFlyGPS hardware is 1100 nits! So, that was definitely a strong contender. If you need -- absolutely need -- your display to be daylight-readable (with direct sunlight on the display), you'll be disappointed at most anything less than 800 nits. Yet, my iPad Mini 4 still has the best overall image of any tablet I've tried (and I imagine the Mini 5 is slightly better and slightly brighter). In direct sunlight, the Mini 4 doesn't cut it, but it isn't very often in direct sunlight, so I still rely heavily on it, because it's so readable. What it lacks in brightness it more than makes up for in other areas. The iFlyGPS device is certainly very bright, but lacks in other areas, IMO. So, there isn't one that is best. You just have to decide which features are important to you, and go look for them.