What i like about the M is how the resistance of the springs grows up over a relatively large distance before it finally clicks.
Me too, this is what so unique about the BS force curve. It rises progressively and then suddenly "gives way" and there's no mistaking that the switch has registered (and the click happens at the same time because the giving-way is what causes the click). Its a great "synchronization" of a tactile and audio experience. Alps have springs too for instance, but the feel doesnt match up with the sound in that perfect way; you get the click from a click leaf and the resistance remains in the spring (unlike the bs) so you dont get that "double confirmation" on all your senses, fingers and ears at the same time. (Dont get me wrong, I like my real-simplified alps a lot too, but they're quite different)
Its this combination and
synchronization of finger-feel and sound in the BS that makes it so unique as a switch. (I kinda like it as you can tell
)
My only issue with bs was that I wanted it lighter (in feel and sound, lol) but I wanted those dynamics to remain. (Hence I went with unicomp (a bit lighter springs) and then greased it, lol). But I have to say my tp2 (with 'real-simplified' alps) is on par with it as a fun typing experience. I'm just glad someone out there is still making these complicated switches.