I love mine...
I use it as a walkaround with terrific IQ and I use it with extension tubes for a light macro setup.
Here are same pictures I posted in Gus' thread.
I much prefer the DA40 over the 50 f1.4, I have the A version but have used the FA version but did not find it any better. No way is IQ better on the 50.. sharpness maybe at certain apertures but not the general contrast and pop that the 40 gives.
I do say I don't use it nearly enough ... kinda obsessed with my VL 125 at the moment.. using that even as a walkaround.
Cheers
Shang