Is anyone using the Kindle Fire HDX 8.9 with a P3A using the Pilot App? I know Amazon has limited access to apps, but I can buy a used one for $160. The seller has downloaded the Pilot App onto the Fire. I am currently using a Samsung Galaxy Tab 4, 7 inch. It has a little bit of lag, plus, HD video does not play back well at all (at least, I cannot get it to do so). I know the NVIDIA Shield seems to be the way to go, but I just can't justify the cost differential. As always, your advice is appreciated!