I have the original Odin and it's actually a really good device for handheld retro gaming up to the PS2 era (but it serves double duty as a docked device with a monitor and you can stream higher end games from a PC to the device using apps like Steam Link as well.)

Taki Udon and other retro gaming channels reviewed the original Odin really highly and I can see why.

I don't think I'd buy an Odin 2 at that price point though because you're better off with a Steam Deck.