[joncrocks]

I think it's a concession that use of particular parts of the keyboard is person and context specific.

e.g. At home, I only very occasionally enter numbers. I very frequently use my mouse, and have large monitors. So I sacrifice slightly less convenient number entry for slightly more room for my mouse(pad) all the time.

At work, I have a full-size keyboard and I spend a higher proportion of my time typing and entering numbers.

[qwerty456127]

Isn't it better to have identical keyboards everywhere for sake of muscle memory?

[nlunbeck]

This is my #1 priority now that I'm in the market for a new keyboard. I lose so much typing efficiency when switching between laptops, so functionality or comfort is no longer a leading factor for me.