Honestly my favorite ae my trimmed indian toddler prefolds. trimmed down to 16 inches. there long and wide enough I can pin or snappi even on my 35 plus lb 3 year old if needed and can still be folded down to fit a small baby. (I did it on my SIL new twins) yet I can also trifold and lay in a cover fine. I love the softness and assorbancy over CPFs but the premiums I find way too narrow.
I have both and noticed that some of my cpfs are as soft as the ipfs. That said, if you are getting multiple sizes I'd say the cpfs so that you can easily tell the size. If not, the ipfs or a soft cpf.