To date, I'm testing one. and I have to say basic operations seem quicker and lighter than the x50.
And I don't find any of these screen flashing/page-to-page flicker/surround glare etc... "problems" worrying, but then they never used to bother me on the x50's........
However, I'm still trying to get to grips with the wifi bit - no Reader Store etc.. yet here. of course.
But I veer towards it not being a big bonus, but interesting. I do find the lightness a bit disconcerting though !
Fussy old git, inn'i ?