You can basically still buy Model M new from a company
who bought the/an IBM factory,
http://www.pckeyboard.com
I used many Model M for about 10 years, swore by them,
swore at them, fractured my arm on one, but never broke one.
The noise helps you type, but the keyboard is not perfect.
In fact, I would say it is a bad idea to use or buy one.
To me, it is a bit like people saying you should use Notepad
to write code, when in fact you should really use UltraEdit,
Scite, or something similarly much better than Notepad.
My next keyboards were Keytronic Designer Series, starting
5 years ago. I can still fracture bones on them, but at least they
are courteous enough to break when I do so (usually). Anyway
a lifetime warranty makes replacement simple enough.
A few years ago I experimented with writing my own keyboard
drivers to provide better-than-multi-key-combinations. That was
an annoyance, and I left it due to time constraints after making
some simple changes to the number pad.
A couple months ago I bought a Datahand. After a few days of
Mavis Beacon I really feel I accomplished something and typing
never felt so good. However, I am a programmer. I write code in
many languages requiring many unusual symbols and use way too
many keyboard shortcuts. As such, my thumbs suffer nerve damage.
Transitioning 15 year old keyboard shortcut habits to Datahand
is daunting. I have many thoughts, but in the end I think I have
three options:
1) Heavily modify the way I use a standard keyboard. I am doing
this now and will continue. Moving the control key to caps is a big
first step, and I use this now. I also disabled the left winkey and alt,
but I think I should re-enable those (already done on one machine).
The big part of this option is still undone, though I have done tests.
The problem for me, and my thumbs, are multi-key combinations.
So, I am writing keyboard driver hooks (instead of drivers this time)
which will translate sequential combinations into the simultaneous
combinations expected by our systems.
I coupled this with a new Kensington Expert Trackball and I think
I have slowed down my nerve damage for now.
2) Use an IBM Shark-like "drawing" input device. Many free thinkers
have mostly independently come up with rather similar "better"
input methods. IBM Shark is the most accessible to those interested
in trying it in the next 5 minutes. (P.S. IBM Shark is not at all a 100%
solution but the foundation for a more ideal future is there.)
I hope this happens soon, but I don't trust many factors required to
make it happen... companies and a dim, yet fickle, general populace.
Small consumer devices without qwerty keyboards are helping though.
3) Become a writer of English and use the Datahand. Not likely. ;-)