Have you considered the Leica CL, or the Minolta CL/CLE cameras with the 40mm summicron? I like using one of these, as they are light weight, have a very bright viewfinder and rangefinder. They also have TTL metering, although you have to use a Wein cell or adjust the asa setting to compensate for using an alkaline cell that has more output. It works fine for me and is quick to focus, has nicely laid out controls, and the lens is really sharp. You can use a 50mm as well as a 90mm lens too. If you use a collapsable 50mm be careful not to collapse the lens, or it could crush the pop up meter cell.
Maybe worth checking out, as they're usually cheaper than other M series cameras.