Despite historically being an AMD fan, I have to admit team green have been doing great things recently. I splurged on a shield TV and a shield K1 tablet a while back, and they are very nice pieces of kit. It's a pity that many software providers are ignoring the android TV platform (Amazon, I'm looking at you), but the shield TV does what it can do (Netflix, Kodi, games) extremely well.
The K1 tablet is also excellent, especially if you want a gaming-centric device. I wish nVidia would release a successfor for it, as I'd happily buy another, but sadly I don't think that's likely.
My next graphics card purchase will also be nVidia, to take advantage of the LAN streaming options to the two shield devices. Right now I can't see a reason for going back to AMD, though I hope they do come up with something.