Hated my Nexus 9, had two, one died in a couple of days when WiFi died. The other I sent back due to poor performance, why was it so much laggier than N5 given the superior hardware?
Then I got a Tab S, amazing screen, literally jaw dropping, but SoC mid range, worked well until it died, after 6 months.
Then I got the Lenovo 2 10, really liked it, weighty, but screen size made up for it all round nice bit of kit but poor gpu meant playing any fast moving game (couldn’t play pinball!) impossible. Went back to JL.
Got an Nvidia Shield k1 now. It’s OK, screen a bit washed out (maybe just in comparison to the oled Samsung screen) , WiFi range not great, really annoying power and volume buttons. Can do all sorts of stuff with other Nvidia products. Already on Marshmallow, sd card now fully supported (again) in the os,nice speakers, feels solidly yet cheaply built. Good value at £150,reminds me of the Nexus 7 2013 but with way more grunt.
If you’re not worried about games or bothered by the weight the Lenovo is a good tablet,else the Nvidia seems like a bargain for £150,and if you’re really into gaming it’s a no brainer.