The M11x is supposed to be faster than the M11. If you can tell the difference in speed your better than I. I had a M8. It took a dump after 12 years. Bought the Airtronics sport " hated the way it felt in my hand". Just bought a M11 used now it seems im back to my old self. But the 2.4 system on it is old and not holding a bind. I think its got a bad module.

To answer your question M11. Ill never use all the bells and whistles on it and for 130 less than the M11x thats what I would choose.