yeah, android is an immediate “no” from me. very limited for what you can do. retroarch on android has a lot of problems, from what i hear. i don’t believe there’s an auto-booting emu front end for android, for example? isn’t it all just apps?
but that said, there’s many x86 or whatever mini PC systems you can get if you want a low-cost and powerful system for emulation, but i think the pi is still the cheapest and most flexible in its class, as long as you manage your expectations. having perfect emulation of the home and arcade 8-32-bit era is plenty to be getting on with!
plus for me i like taking modest hardware and making it do cool stuff, especially knowing that there’s this huge userbase/community that is trying the same. it’s a journey 🙂