It all comes down to your budget I suppose. Yes, you can get a Nvidia Shield which has an hdmi out, and use that with something like fat sharks. If you have a smartphone, you could use an app called Litchi, and a set of cheap VR
goggles in which your phone goes in. Personally, I went with the
DJI goggles. They are wireless, made specifically for DJI products, and have a beautiful picture. As far as a tablet goes, again it comes down to budget. I believe DJI is “optimized” for Apple products. Plenty of Android devices work just fine don’t get me wrong. As far as Apple devices, the
mini 4 is a great option as it will still “fit” in the remote brackets. A
mini 2 has been reported to work fine. It will be cheaper, but also slower. I personally went with a used iPad
Air 2. It’s the same specs as the
mini 4, but with a larger screen and faster processor. I was also able to find one cheaper than a mini. It does not work with the brackets built into the remote, but there are plenty of other mounting solutions.
One other thing to consider is most android tablets have GPS built in. While iPads don’t. You can get an iPad with cellular, but you don’t have to activate the service. This will give you GPS. Not having GPS isn’t a deal breaker, but you will lose out on some features like follow me, and the ability to change the home point out in the field (I believe).