I have the oportunity of buying a M9 with new style sensor instaled in 2019 by Leica, or a very good condition M10. 2500.00 vs. 4500.00
The M9 comes with 6 mo. garantee, the M10 no garantee.
I understand that the new type of sensor in the M9 will not corrode over time.
Thanks in advance for any advice.