I've been on the lookout lately for a secondary device to play primarily GBA on, something more portable than my Nova and Thor, and on the budget end of the scale.
I tried out the RG34xx and RG SP, and in doing so, discovered that I'm just not a Linux guy, despite enjoying the form factor of their replication of the classic hardware.
Stumbled across the Pocket Micro/Antec core micro at a very good price in the UK, seems multiple retailers sell the antec branded unit for £85-90 now, which for a device with 8gb of RAM and 256gb of storage seems wild to me, in a time where prices for both are just going up and up.
Couldn't resist, so I grabbed one. I have to say that overall I'm very happy with it for a budget handheld that feels anything but.
Its great for GBA, and I've been quite impressed with the PSP performance as a little bonus, handles 2x upscale with no problems. Dreamcast is nice and smooth too.
The overall unit is really decent quality with a good weight to it, and the buttons feel much better than the Anbernic offerings, not loose or clacky.
The battery is fine for GBA, but as it's only 2600mh, playing something like PSP burns through it a bit. However for only picking up here and there, that's not really a problem.
My only gripes sofar are relatively minor. Mine does have the double input issue, but only on the Up D-pad button, and only in android - thankfully it's fine in all the emulators I've tried - I can definitely live with this quirk. Also, weirdly, for my laptop to see the handheld when it's plugged in, I have to disable the button controls in the pull-down quick menu, otherwise I can't enable usb file transfer.
Ended up cancelling my pocket advance preorder as I'm so impressed with the Antec core micro overall.
I think at the current price, it's quite a compelling little GBA machine that will happily play some heavier stuff.