On Friday, June 23, 2017 at 9:50:40 PM UTC-4, wrote:
I use a Nexus 2013 7 inch. Its best with polarized sunglasses. Otherwise there is a reflection. I have also used a moto g3 which also worked great.

I use XC Soar on an Oudie Lite; before, on a Streak 5 inch. I had connected the Streak by IOIO board, I now connect the Oudie to a CNv with the Goddard cable. I prefer the Oudie for visibility.