Get the least expensive, but complete, Leica M body you can find and then get a CLA. The reason I think this is a good option is because you'll often need a CLA regardless, so why not save money? The M4-2 and M4-P are historically a little cheaper than the older bodies and the later M6. If you think you need a meter, get a meterless body as well as a good handheld meter, and you'll learn to judge the light by eye. You won't need a light meter at all then. If you're thinking about going with another brand, the CV cameras are cool but the Hexar RF is an amazing suggestion, previously listed. The only issue you may face is difficulty of repair, if needed. I loved my Hexar RF while I had it for a few years. Really, the camera body is just a box to hold the lens, which is what really matters. If you like the ZM 35mm, get an affordable body to hang the lens from and go have fun.
Phil Forrest