Quick comparison and further evidence that the GR is the best.
Size/Weight: GR by a mile
IQ/Sensor: Q3 but negligibly better. I prefer smaller sensors for street photography as I prefer shooting with a large depth of field.
Lens: Q3 by a mile. The lux is marvelous but also much bigger than the GR.
Ergonomics: GR by a mile. The Q3 is a two handed camera. It can be used with one hand but it’s four times the weight as the GR and gets very heavy.
Crop modes: Q3 but functionality is limited since frame lines are so small at the 75 and 90mm crops.
SOC JPEGS: GR by a mile. It’s Fuji level good.
Autofocus: Q3 but negligible. GR is nearly as snappy in good light. Not sure about low light.
Manual Focus: GR by a mile. I can easily change focus with the wheel using one hand. Q3 is a two handed camera although the focus by wire in the Q3 is very nice.
Weather sealing: Q3 by a mile
Build quality: Q3 by a mile. GRs are delicate little flowers.
Sensor size: GR. Smaller sensors are better for my street photography. I don’t care about depth of field.
LCD: GR. I don’t care about a flip screen. I shoot blind a lot and like the random photos I get like that. The Q3 LCD screen is probably better but the GR is more than good enough for me.
Startup Time: GR by a mile.
Battery Life: Q3 by a mile. GR batteries are a third of the size so it’s not big deal to carry extra ones.
The Q3 is seven times the price and marginally better in a few areas I don’t even care about. GRIII for the big win.
Chris Athanasiadis 