I have used the X-Pro1 for a month.
Once the manual focus is practised, it becomes much more accurate than with a M digital and its tiny 0.68 magnification.
In really low light, the EVF is better.
I'd say that only my ZM viewfinder is nicer to use. Even the Leica x0.85 MP viewfinder is not as precise. Costs me a bit to admit, but it's how it goes !
Image Quality wise, the Fuji has no competition I am afraid : no AA filter, no Bayer filter, super sharp and no noise up to ISO 3200. Even ISO 6400 is better than ISO 640 on the M9.
I have not tried the Sony though, only read review so cannot provide a "real life" comparison. Just saying I am sold to the Fuji. What a camera !