Duotone have this summarised in a graphic somewhere..... But basically short lines sit further towards the edge of the window so feel less powered. Long lines sit slightly deeper so will feel like there is more static pull. Long lines have a longer stroke so its easier to boost bigger. Short lines will loop lower in the window so will give you a fun yank. Pick your poison.
Note static pull doesn't change.
But also - just go for 22m lines as this is pretty much normal for all brands.
