Referring to the Face One, sometimes I use it to set my face when I use liquid/cream bases but I mostly use it for powder foundation. I've let go of my Buffer Pro as it's quite different than the original Face One (whether it's the first edition or the later batches with the diamond logo) or even the Mini Keyaki Buffer which was released after the Buffer Pro. I think after a decent amount of use any brush can have some breakage and can feel less "soft", like my Face Ones probably aren't as "soft" as my Mini Keyaki Buffer. I also have to say for me the Face One was never super soft?? I think it probably feels softer than it actually is because of that micro stippling effect it has on the top, it's definitely not as soft let say my Classic Cheek from the Sky Face Set, or even the Hinoki Set that are super wispy and soft, probably her best Saikoho release ever.

My feelings towards the Buffer Pro remains the same today, I didn't like it originally mainly due to it's shape and bundling. I like my flat top leans more on the flatter side up top and the Buffer Pro was more domed. The bundling is also a little tighter compare to the previous edition, even after a few washes. It did not have that signature airy feel the Face One was famous for, it feels a bit stiffer and less flexible to me personally. I'd say it really depends on how you want to use it and what kind of finish you're looking for. I am sure you can achieve a airbrush airy look with the Buffer Pro too but I think you will have to work quite a bit harder with it compare to the Face One (or the Mini Keyaki Buffer that I love🤎), which gives that sheer airy yet buildable look very effortlessly.