I would also take pixel, and I also like the blackberry android dtek60. Though it doesnt have the power of the pixel, or s8. I have 2 android phones one is an alcatel vr idol 4, and one is the dtek60. If I can get something to run well in those I know it will do well on the new gen phones. I heard the nvidia blackphone tegra is one of the top performing android phones. The issue is developing for only top end as the large majority of android users dont have this power in their phones. Most are running lollipop. The only reason i know about the nvidia was they ran the elemental tech demo from ue4 on a phone. That is extremely impressive for a pocket device. When I was in china a company called meizu had 8 core phones running with 8gb ram. Xiaomi also has top end phones. The list goes on and on.