My next-favourite device is the GPD Pocket. Its simply a great Linux workstation - near-perfect hardware design (unibody: yay! shitty keyboard: boo!) and - since its Intel - pretty much everything you could want to run on a machine this size is just an "apt install" away. Paired with a couple of iControlPads' (lol!), this is pretty much the ideal portable gaming rig.
I can't wait for the Pyra, and if there's a GPDPocket2, I'm definitely in for that. I'd love to have a device that delivers the community and form-factor of the Pyra, with the materials (unibody) and architecture (Intel) of the GPD Pocket some day. In order that we get there, I'm supporting any of these companies that push us closer .. even though, of course, a Switch or an Android tablet would probably be a better investment for gaming needs. ;)