I'll wade in here...I have an older M1, and older SBE, and a Montefeltro in 20ga. I also own about a dozen other shotguns - 870's, Faustis, Browning O/U, Stoeger, Winchester, Mossberg, etc. I have had a few issues with cycling in cold weather (below zero), but a change in lubrication solved that. The M1 is my "go to" gun.
When its time to get serious, there is no other choice for me - Benelli.