I havnt tried Muhle blades before this morning but in a Rocca they are amazing, and if you have a Rocca give them a go.
Sometimes a blade works in one razor and not another. For example, I had tried BIC blades a few times and absolutely hated them, yes they were sharp but felt like i was scraping my face when using them. Was recommended by
@nav1 to try in a Rocca and WOW!! totally different blade, and now I love them but only use them in the Rocca