TIL off keyboard forums: The 6lb, 20-year old, still-in-perfect-working-condition IBM Model M, is a 'flimsy toy'. Anyway, I own two and love them, and if this is really gonna be a keyboard for life choice, then I gotta go with the keyboard I'm almost sure will last me for life.
Do that many people really own Model Fs? They seem kinda hard to come by. And which ones are people using? This one?: https://en.wikipedia.org/wiki/File:IBM_Model_F_AT.png. What do you do for for that sixkey cluster (home/end/pgup, etc) and arrow keys? You just toggle the scroll lock a lot?
The AT is pretty popular, probably the most used.
The 4704 Model Fs seem pretty popular as well, the Kishsaver of course is legendary, but the 107 is the closest to a modern layout you'll find on an F.
And yes, comparted to my over ten pound, solid metal, 31 year old keyboard I'm typing this on, I think your M does qualify as a flimsy toy.
![Wink ;)](https://cdn.geekhack.org/Smileys/solosmileys/wink.gif)