There is quite a range of devices out there now with varying capabilites. Things like the Onion Omega2+, Oranage Pi, and more.

Raspberry Pi also remains good. While the Pi5 is expensive and more powerful - raspberry pi also makes the Pi Zero boards which are cheaper less capable boards which are closer to what the original raspberry Pi was but newer hardware.

I'd say the Pi5 is a heading more towards a full PC like device (hence the comparisons to cost and capability minipcs pepple are making in thia thread). But there remain plenty of lower spec machines out there now similar to the original cheap Raspberry Pi concept. And we've had high inflation recently - to some extent the cost perception avtually reflects money being worth less than it was and buying less for $10 or $20.

Not the person you're asking but personally I use Jetson nano for some work stuff (and when I upgrade the "old" one is mine), odroid I've used for some misc creations and testing, and I'm personally looking forward to trying the radxa x4 as an htpc.

What I am really excited about right now is tossing my recently acquired spare jetson nano on a drone, right now I'm setting it up to walk around with it and test CV before it gets mounted up on the drone.

Not super familiar with the gpio side of things, and I also haven't dug that deep into the space lately since I already own my rpi and it works for me so take all this with a pinch of salt, but I found some options that seem reasonable

• Libre Computer Le Potato
• Orange Pi Zero 2
• Radxa Zero
• NanoPi R2S
• Banana Pi M2 Zero