Same problem here, also the A5 ones are actually quite heavy to carry around.

I find the A6 Leuchtturm ones to be in most practical use right now, they fit into pants pockets (or for me, dress pockets) and they also come in bright yet simple colors which is somewhat inspiring for me. I need relatively long time to fill them so while the price is high they are not a big regular cost factor.

I need something to scribble, macOS notes doesn’t always do it in terms of putting thoughts somewhere and any electronic UI tends to be too distracting.