I'm seriously considering the
Nvidia Jetson Nano. The GPIO is surprisingly fairly compatible with the Pi, so you can use some of the add on HW with it.
I have 2 RasPi 3b+ units, which work okay as Retro Gaming units and Streaming Video players (I have a dedicated Video server I built using Linux that hosts the videos and games - the Pi's work good, but my Nvidia Shield smokes the Pi at both as it should since it costs quite a bit more), but I'm looking for a new plaything.
The knock (by some) against the Nano is that it uses proprietary drivers and such from Nvidia, which aren't open source. Still, check out those specs! LOL.
AIR.