You know, the new Fuji X10, with the f/2~2.8 zoom lens got a very favorable first look from dPreview. The thing about the X100 is how riddled with QUIRKS it is...if you read Michael Reichmann's review of his use of the X100, you can see that, once again, FujiFilm did their normal effed-up menu building on the X100...and got seriously dinged by the user community, who expected that a camera with a full year's worth of hype while in development would have had the kinks ironed out of it. (I have owned gthree FujiFIlm d-slr's and my wife two of their high-end bridge cameras so I am pretty familiar with the way Fuji tries to "think"). Apparently, according to dPreview, the new X10 has had all that nonsense straightened out.
As to the Sony NEX...I had a salesman demo one of the NEX's for me...he mentioned that it took thirteen presses to do an ISO adjustment...I thought he was kidding me, but no, ISO was BURIED in the menus...
I dunno...the early Sony lenses were absolutely horrific..their 16mm was crap, and they let them out to the early testers, and then had to have a big announcement about RE-DESIGNING the lenses!!! I dunno...the little m4/3 Panasonics look and feel mighty good to me in the toy camera class....especially the recently-discontinued one...but if I were preparing to drop $699-$899, I would really,really want to get my hands on that Fuji X10 to see how it is....the X100 is version 1.0, and it SOUNDED good,and the specifications looked good, but the actual execution of the X100 sounded to me, and reviewers, as quite a fiddly mess.