I kick-started the Ouya, years and years back. Played a few games on it, but it was just too underpowered.
The GCW Zero was another similar story; just an underpowered handheld console.
I really like the Retroid Pocket 4 Pro. It’s a non-major console that is 1000% worth the money.
My GCW is too slow to play anything, honestly. It struggles with even GBA games. I love the idea of the Ouya as well, but I think that I’ll probably just go with an rPi if I ever go that route again.