@Ocean22 if I'm gonna buy a new keyboard I don't think I'd buy a brand new IBM. There are many good if not better competitors even in the mainstream gaming industry. I love IBM's feel on old, "well tested" keyboards but new keyboards are just ok-ish, "standard".
@Ocean22 I love using numpad for typing long numbers, and for + and *, but I think toggling numlock to use pgup/pgdown would be both annoying (if I forget to toggle it) and slow (3 keypresses instead of one).
@Ocean22 scientific studies show that reading Safety and Comfort guide does not reduce risk of serious injuries to hands, wrists and other joints. Scientists currently debate if _following_ the guide does reduce the risk or not.