So I got a Retroid Pocket 2 because I fucking hate using the phone's touchpad to play retro games and adding one of those snap-in joysticks is for kids and wizards.
So far the experience has been a mixed bag, going from:
"Neat! I can emulate anything up to a PSP in this thing"
to
"Configuring this think is a major pain in the ass and I bet I'll invest +100 ours just to make the frontend work"
So now I loaded RetroArch and decided to fuck all and play some N64 games at 25 FPS. I mean, I don't regret getting one of these but I got way more fun and ease-of-use from a modded PSP. Honestly. Unless you get pleasure from tinkering with some chinese piece of plastic, get a PSP or a Vita.