Street Photography: Olympus 17mm F1.8 or Panasonic 25mm F1.4 ?

Do you want more of a portrait lens or something a bit wider?

Is AF speed critical?  Or do you need zone focus & distance markings for MF?

What's your tolerance for the weight/size of the lens? The 25 is 200g and 55mm long, the 20 about half that, and the 17 is 120g/35mm (but slightly smaller diameter than either Panny)

If you need the brightest aperture on an AF lens, there's only one choice, but if you prefer MF, there are a couple F0.95 Noktons you might want to look at

--
Art P
"I am a creature of contrast,
of light and shadow.
I live where the two play together,
I thrive on the conflict"