3) what happens when I get a new keyboard. While my general 'rhythm' might stay the same, a) specific keys slow me down consistently depending on keyboard, and

3) what happens when I get a new keyboard. While my general 'rhythm' might stay the same, a) specific keys slow me down consistently depending on keyboard, and b) the length of press might be quite different between even the chicklet apple keyboards (different 'depths'), let alone different brands.