I have both the Nexus 7 2013 and the ASUS ZenPad 3S 10. The Nexus now sits on the shelf. Of course, the Nexus has more candela per meter squared (nit) but it's really moot if the sun's nits are reflecting from the screen and into your eyes. I have to use a hood with both to make them useful in direct sunlight, thus making "real estate" more important to me. The 9.7 inch 4:3 screen ratio of the ZenPad makes it compatible with iPad 9.7 Pro and iPad
Air 2 accessories for your
P4P controller as well as matching their screen resolution. With it's 128GB capable storage capacity (it comes with 64GB), makes it $400 cheaper than the comparable iPad Pro and $200 less that the iPad
Air 2.