What changes when you switch
Dvorak moves vowels to the left side of the home row and relocates punctuation. Colemak keeps more familiar QWERTY positions and shortcuts while changing much of the letter arrangement. Colemak-DH changes additional positions and has different row-staggered and ortholinear forms.
Changing an arrangement also affects where a shortcut’s letter is typed. Decide whether your preferred application shortcuts should follow the character or the physical position.
Compare the text you actually type
Use a sample of your own writing or code in the analyzer. Examine key frequency, row use and same-finger letter sequences separately rather than treating one combined score as a personal typing-speed result.
Use the same text and finger assignments for each comparison. Practice the selected arrangement and measure your own accuracy and speed once it becomes familiar.