Welcome!
Glad you are smitten with the same bug I have... If it's not a true blue Model M, I have a hard time with it...
I share an office with the washing machine and dryer... noise is not an issue... at work, I have started a trend... we are all programmers, and I have convinced one guy that mechanical keyboards are FAR better than rubber dome could ever be... He's now using a Razer with Cherry MX's...
My Model M here at work is significantly quieter than the others I have at home. I repaired a cracked barrel plate with sort of a rubber cement that both stiffened the barrel plate and has quieted it down significantly... If you are into some work, you can bolt-mod your M, and fill the weak areas of the barrel plate with this glue (more to follow) and see how that works. My co-workers have noticed already...
Again, Welcome!