Thanks xkoo, abitdeef & ojisean - you have made my morning and I can't wait until the M11 arrives in a few days time
I have not had my X5iii very long and have hardly used it yet. I had a real problem trying to decide whether to get it or the M11 which had only just been released. I chose the X5 as it had Google Play Services and it seemed to have an active group of people tweaking it and playing with custom ROMs etc. Very soon after it arrived I realised I had made a mistake as it was just so slow compared to the other devices I use on a day to day basis. I would have been happy with it 3 or 4 years ago but now, even my budget Lenovo tablet seems like greased lightning in comparison. Also things like no 5GHz wifi meaning it could not take full advantage of our new mesh system have made me realise that I will never be fully satisfied with it. An expensive mistake as I have gone from zero Hi-Res players to owning two in the space of just a few weeks !
I should say I have no complaints about the sound of the X5iii. I have pair of vintage Shure E500 IEM's and they sound absolutely amazing with it and is hard to imagine that anything could be better so I can't wait to try them with the M11.
One other question if I may - I have an A5 amp which I got to use with the X5 - is it a suitable companion for the M11?