Fuji XPro1, very good APS sensor? (One site's opinion)

Well, to be honest, the NEX-7 though high resolution is noisy, even at
200 ISO so saying the Fuji is better does not mean it's better than
say the D7000's sensor, or the Pentax K5 sensor.

http://www.eoshd.com/content/7505/fuji-x-pro-1-second-look-and-video-mode

No surprise what the Fuji X Pro 1 sensor has – a very expensive custom
bayer variation. This helps to explain some of the high price relative
to the Sony NEX 7.

It accounts for the R&D effort Fuji put in to create the new sensor
and the way to prove it is to look at RAW stills at 100% – they look
far cleaner at the per pixel level than those from the higher
resolution NEX 7. Although the sensor is 16MP in the Fuji, the custom
bayer pattern and lack of anti-aliasing filter means it performs more
like a 24MP standard CMOS in terms of real resolution, but with none
of the drawbacks of noisy high ISOs.