I wish I knew more about these devices and I'm currently tied up deep in my PAPk3+(s)(b)(
) unraveling it to its best potential. It seems to me that the GM2 does not get a lot of coverage, the K3P gets slightly more, and the RS-97 gets tons of love here. I like my PK3 and have no issues with it. I could have kept it bone stock and enjoyed a very effective emulator. The screen is nice and the unit is decently built. The built in emulators can run 80 to 90 percent of what you can throw at it in its range of consoles and as you can see it has a lot more potential than the OEM has not unlocked. Maybe a GM2 owner will chime in with there 2 cents. If you want to get a good look at all I have done with my K3P look at my youtube Level By Level Gaming and under the playlist I have a lot to check out on the device. Hope this helps.