...differencies you should consider are fact that Xors3D is DX9 based system, LE is OpenGL based system (SM3 and up)...second thing is that, if you are okay with DX9, then you have to investigate whats going on with development, because, rumor is that development is, so to speak, stalled, because 2 developers of system left, and only one guy is in development pipeline, so im not sure about its future, if rumors are true..i have had experience with Xors (i have it too, among dozen amount of other systems), and far as my memory serves me, developers were really nice fellas, but im not sure what is going on right now..I hope they will keep moving..