Thanks Ray,
Some very thought provoking observations here that make me consider even more carefully more future planning.
I have had my X100 for well over a year and I am very pleased with the results it delivers, I can live with the slower AF for the subject matter I use it for.
I was considering upgrading to the X100s at the end of the year, however, I have recently parted company with my DSLR kit and GX1 and picked up the OMD with a nice clutch of lenses (fast primes) I am delighted and amazed with the IQ from this camera (Sony sensor obviously does its job well) and as you eluded to, it does produce quality images that can match those from my X100.
In view of this I am now considering holding off on my X100 decision and seeing if the Olympus/Sony partnership delivers a replacement OMD later this year, if so, it will probably be more prudent for me to go this route and continue to use my existing X100 as and when. My alternative is to again keep the X100 and look at adding a nice fast 12mm lens to the olympus clutch.
A long time yet between now and then (year end) so plenty of time to look at the roadmap for Olympus and make a more informed decision (I hope) when speculation materialises as fact.
All in all, exciting times for us all as big boys make smaller bodies and Mu43 makes better performing cameras that deliver IQ on par - a playing field that if you rule out DSLR's becomes ever more level and decisions can be based more on size and tactile interaction as IQ will be fairly consitent across the field.