@manfrominternet
There's always someone dismissive like me, who after trying out dozens of different cameras and admittedly - being too nitpicky, came to conclusion that there can't be the "best" tool. There's always someone else who had a different experience in their life, found a perfect camera in Olympus 35RD, Pentax LX, Nikon F6, Hasselblad, Leica, or even Speed Graphic, you name it. These are personal experiences which sometimes match with objective reality, but other times - they're just subjective.
I don't think remarks like mine makes anyone afraid to ask anything. Pretty much all forums, including this one, have those perpetually asked questions and I don't think my input is somehow deterring or anything. Still, I'm sorry if I offended you in any way.
Also, on the subject of this specific topic, any rangefinder camera with meter cell situated around the lens collar (like QL17 GIII has, for example) will have a reasonably accurate metering, for negative film. Higher precision is found in TTL-metering circuits, but I can't think of a single fixed-lens rangefinder camera which has TTL meter. After all, fixed-lens rangefinders were inherently designed to be cheap, so they had to cut some corners. So if you want a rangefinder camera with a light meter as good and as precise as an average SLR, it will be something like Cosina-made Bessa cameras, or Leica M5, CL, or Minolta CLE.