I'm following the scene of homebrew since Dreamcast times (such a great era , yeah) and like many of this forum I guess ,I'm collect consoles!
I have the original Dingoo using Dingux legacy and now that the GameGadget (GG) was 30 GBP + free delivery (for me this a bargain), I grabbed one as well.
I must say that I'm really happy with it for that price. Yes , for that price! The stock firmware is not bad , but it must be improved (bad mame, snes , etc support), you can easily boot in to OpenDingux though.
All emulators that I tried found here http://boards.dingoonity.org/dingux-general/opendingux-developer-pre-release-2-application-compatibility/
are working good and most of them full speed.
I can directly compare the dingo and the GG , because I played with both of them yesterday and at first I though that such a big screen of the GG is a disadvantage , but now love it . Games like duke nukem and wolfenstein for example look much better
The only minus so far is that some games (like heart of the alien or jazzjack rabit) show some strange color
I think this is due to the lcd drive and the HW support for SDL. Once I have more time I would love to review some source codes
and try to recompile maybe with the SW support (one or double buffering) to see if this is the problem.
Ohh one more thing (it's getting a long post , sorry)
The OD is using the power slider(hold it + a button) , but the GG doesn't have one (it's a switch) , meaning that some functions are missing (but most of them can be controlled via software like the volume for example). I will double-check if that can be remapped ...