nmm, I like them both - for different reasons or different sort of magnets - I guess! LOL
I have always used the soft felt for both magnets & bkmrks with no problems *4U
I have used both,,,,,, the stiff worked better if i used round little magnets but i like the soft when i used a sheet of magnet cut to the size of the felt flowers and hugs for being curious!
It works fine with the softer one for me. I can't give you any feedback abouth the stiff one.