To answer your question: Xgngeo has more (configuration) options. For the moment, I left out the sound sample rate for example, because my config screen was full . But Xgngeo also shows options which cannot be changed/set (blitter for example). Personally, I find it most important to be able to start a game quick and easy, rather than have to go through menus with all kinds of obscure options I will likely never change. I assume your remark about the key configuration has to do with gngeo itself? I never experienced that issue (using the gamegripper key config)...