The first thing to do is pay to fix the finder in the M3. If you decide to keep it, it'll work better, and if you sell it, it'll bring more. After that, take a hard look at your shooting preferences. I have to assume you prefer the metered cameras, as you haven't put the M5 or M6 on the table, but I'd consider selling one of them instead. I'm with elude- sell the .85 M6. The newer Leicas come up short in comparison to the older ones, IMO. Besides, if it's a .85 M6 classic, and not the TTL, it's a fairly rare camera and could bring the most money. Keeping the M2, M3, and M5 would leave you with the best finders (provided you clean the M3...) suitable for a range of lenses, and a good body with a meter for when you just have to have an in-camera meter. Besides all this, you keep the three with the best of the old Leitz craftsmanship in build quality. Finally, stick a 35mm on the M2, a 50mm on the M3, and a 90mm on the M5, and be DONE.