This was my first "retro handheld" purchase. I saw an article on this on OMG! Ubuntu! and decided to look into. I was looking for a "handheld" I could use for playing PS1 and a few other games, so I didn't have to rely on my Android phone so much; the touchscreen controls can be quite aggravating.

Ordered this from AmeriDroid. Shipping was quite affordable and arrived over the weekend. Although the SD card they flashed for me was perfectly fine, I ended up needing more space. So I took a 512 GB card I wasn't using and flashed Hard Kernel's Ubuntu 18.04 image tailored for the OGS. I had no problems transferring my ROMs on either card.

This device is just what I was looking for. I wasn't planning on emulating games past the PS1, so I'm satisfied with the hardware. Thank you to Hard Kernel for making the OGS, and AmeriDroid for their quality service.

Without a doubt, it is the best OGA console on the market.

strong points:

its spectacular screen, it looks really very good.
its weight and ergonomics.
your battery is weak.

loose:

speaker and only one, and above behind.
it does not have vibration
it does not have internal wifi
small d-pad and ABXY buttons

I have made some modifications and I have made it very beautiful.

https://fotos.subefotos.com/9173419c20f65afb683480033c495613o.jpg
https://fotos.subefotos.com/d2bd36f073d2894d76014d5f09b31a04o.jpg

more photos:
https://forum.odroid.com/viewtopic.php?f=193&t=42443

I've had this for a week now and I absolutely love it. The big screen is really nice to use and the overall size of the device and button layout are super comfortable. The screen looks really nice and the battery lasts forever. My main complaint with this device is I wish the dpad and buttons were a bit bigger since they had the room. But after playing with it for a bit it became less of an issue than I thought. I ended up getting used to it. Also, the thumbsticks may be less than desirable but I haven't used them much personally and I see a lot of people swap them out for vita sticks pretty easily. I would recommend you get the WiFi adapter too. It's unfortunate it doesn't have one built-in but I also didn't find it too big of an issue. You only need it for a few things you typically won't do often. Still a good idea to get one but it not being built in wasn't a big deal for me. Despite those flaws, I'd still give it 5 stars as for me it works so perfectly when playing SNES and GBA games outdoors. Also ordering from AmeriDroid was really nice with the good shipping speed. The candy that came with it was also a nice surprise.

It's the first handheld I bought for emulation purpose based on recommendation and I already regret it. For the price in Canada with import ($180) the battery is already dead after not even a month, and it's basically a brick unless I use it with the power cord always attached. They offered a replacement battery, which is a nice gesture, but paying for shipping and import fee again is just insane at this point since it will cost another estimated $30 and for this price I could have bought a used Switch Lite and do the same thing. So I'll try to find something locally.

Nonetheless, for the 3 weeks I used it, it's a nice device with a nice big crisp screen that plays pretty much everything you throw at it.

My initial impression of the handheld wasn't a great one - sure, the screen looks great, but the dpad and buttons are a little too mushy, and the analog sticks are about as cheap as you can get. But, between the screen and larger battery space, I felt that it had potential.

However - with some simple drop-in-place mods, the experience is drastically improved. Ordering some aftermarket conductive rubber pads designed for the Gameboy Color for the dpad, face and function buttons improves the basic usage, and the analog sticks are drop-in replacements for PSVita sticks. A few Firmewares now allow for overclocking, so an inexpensive heatsink will help keep the CPU and RAM cool during heavier sessions And if you get one with the clear case, they're heavily customizable, since you can paint or dye the shell.

All in all, I would say don't get one of these unless you want something to tinker around with. There are other RK3326 handhelds that provide a better out of the box experience - but none quite with the potential of this one.