dpreview's Fuji forum is full of Fuji users complaining than the F50 IQ is worse than the F30.
Well, I've owned both and can categorically state that it is not. The F30/31 do have slightly better noise levels at higher ISO's but there is really not much difference in my pictures and the extra megapixel boost is worth it.
cube said:He also asked with a camera with IS. That rules out the F31fd, F30, and F20 even if he could find one.
But not the F50.