How do I decide which increase to use, left or right slanting? What is your favorite M1?

I like the KRL/KLL myself. If I do the M1, I don’t worry about which way they slant, they look about the same unless you look really closely. When the item is done you really can’t tell that much.

I recently made a kid’s raglan sweater and used the M1R (M1B) and the M1L (M1F). I used the M1L on the items left or your right and the M1R on the items right or your left. If you are going to use them you need to be consistent, because close-up you will see the leaning of the stitches (especially if they are seamed together).