If you need a second keyboard to use your text editor, maybe the problem is not the keyboard, but the text editor. yes emacs is more than that, but with f1-f12

If you need a second keyboard to use your text editor, maybe the problem is not the keyboard, but the text editor. yes emacs is more than that, but with f1-f12, ctrl,shift,alt and their various combinations to the alphanumeric keys, it seems a bit overkill to me. If you still need more keys, you can also get a JP keyboard with extra modifiers conveniently located next to the spacebar.