The typical mapping is much like a macbook these days. layer+numrow. It's a pretty easy one to digest (f11 under 0, f12 under -). I don't go for '40' keyboards

The typical mapping is much like a macbook these days. layer+numrow. It's a pretty easy one to digest (f11 under 0, f12 under -). I don't go for '40' keyboards though. It's just too much overhead for too many keys, especially for software dev work. I wouldn't go smaller than '60' and don't myself go smaller than '65'.