Pretty good, but I go the opposite way: .6mm nozzle. I design all my prints to work with that, and gosh it's a lot faster.
Discussion
I'm not sure the smaler head is worth the extra time if the part can be printed with a larger nozzle.
I have a big print going now and then I plan on printing the same object that I printed with the 0.5mm nozzle to get as best of a side by side comparison as I can.
I expect it'll be nicer, but how much nicer? And os it worth the extra time and energy required?
I suspect I know the answer, but we shall see.

