A relatively recent Nexus device is a good proposition, Google are pretty good at providing the latest OS revisions on the devices and if needed you can flash i

A relatively recent Nexus device is a good proposition, Google are pretty good at providing the latest OS revisions on the devices and if needed you can flash it to older versions of the OS. https://developers.google.com/android/nexus/images https://developers.google.com/android/nexus/images