You've read my mind and said both things that I was going to say. That Model M deserves to be typed on.
I prefer my Ducky for size and looks. And I think Red switchen are better for gaming then buckling springs. There are times I use the IBM just becaese I can though.
I've actually stopped gaming pretty much at all -- I don't know what it is, but I just don't enjoy it like I used to. I enjoy my Cherry MX Browns on my Das Keyboard but it doesn't have the satisfying click-clack that the buckling springs do. I'm thinking about picking up either a Model M or a Model F or moving to Cherry MX Greens.