I've been looking at the Chinese Android/Linux emulation handheld scene for a few years now and while I think these things are really neat I've never bought one. They've always either been too expensive or too compromised/crappy with no middle ground.
The RG35XX H from earlier this year was pretty close- it had a horizontal form factor, Bluetooth, Wifi, a full set of buttons and analog sticks, decent build quality and performance that could easily handle everything up to PS1 (and could stretch just a little bit beyond that), and could be bought for less than 70 dollars. I hated that it had those in-line shoulder buttons a lot of these Chinese manufacturers love and I wished the screen had been just a bit bigger.
(To be fair, I wouldn't mind a device that could readily play DC, N64, PSP and even the Saturn, but that sort of performance seems to cost at least 130-150 dollars and would most likely end up costing about 200€ in Europe)
This new RG40XX H looks to be the exact same thing as the 35XX H but with a 4-inch screen and stacked shoulder buttons. If it's not horribly more expensive than the previous model I might finally end up getting one
That might take a while as all the PS2-capable devices still cost around 150-200 dollars from what I can see (or 200-300 euros in Europe).
Personally I don't mind since all of the sixth gen games I'd like to play are ones I'd prefer on a big screen anyway, though the PS2 and GC definitely have tons of arcadey games that would be fun on the go
True, a lot of the chips used currently are older ones that are common in android tv boxes. I'm hoping given time the more recent chips will start to trickle through so we start to see more capable machines and more competition may lead to lower pricing. There's a load of systems up to ps1, the new sp shaped ambernic my wife has been keeping an eye on but I can emulate everything up to 360 on my laptop so I'm hoping for something a little more for on the go personally. But its nice to see a wide range of devices and what they can do currently is great, the markets competitive for them too which is always healthy and good for the consumer