Thank for the feedback, friends! Yeah, I'm also inclined towards the true old leaf buttons ... I have no intentions of using microswitches
What I'm trying to understand/know, however, is whether the different
designs of these three types of pushbuttons have an appreciable impact in terms of comfort for the user. To make me understand better: the old original arcade buttons were tall and (I seem to remember) rather concave... in my opinion very aesthetically pleasing but perhaps they could cause some discomfort to the fingertips after intense and/or prolonged use.
The modern design (i.e. current Happ concave) are much lower (the plunger rises less, above the bezel) and the concave shape is much flatter: I think this design is more comfortable in continuous use, but it's also the less attractive of the three (IMHO). Finally, the ClassX pushbuttons are a middle ground between the previous two, with a less pronounced concave shape than the original arcade buttons but perhaps a hair more than the current Happs. Also, the bezel is more "meaningful" than the current Happs, much more similar to that of the original buttons, which I definitely like.
However I think that the originals are more beautiful overall, so ultimately I'm trying to understand if I can install buttons with the design of the originals without incurring in discomfort or if it is better to leave it alone and lean instead towards the ClassX. I hope I managed to make myself understood better!