You could always flash your own...

https://developer.ubuntu.com/en/phone/devices/installing-ubu...

I've bit a little disappointed that Firefox OS didn't pan out

would love to hear more recommendations as well

will pick up Pask's book when I receive the Principia, thanks!

publisher's website http://www.kroneckerwallis.com/

A fully-programmable 100-spin coherent Ising machine with all-to-all connections

http://science.sciencemag.org/content/early/2016/10/21/scien...