I don't know how to make this post not look like a troll post, but purely from interest and being OCD about facts being facts, I would like to just point out a few things that i don't agree with Solutor's argument for RD being the best for DT.
He first define best as which switch has the simplest (or just have a simple) mechanism to actuate the switch repeatedly as quickly as possible. Not how i would define it, but i see the simplicity in it, and elegance and understandability counts for something, and will go with it and explain why even if it is true RD wouldn't be best.
(As a side note for interest, a more simple one i thought up could be, just how quickly can the switch theoretically actuate repeatedly reliably, ie don't think about the external mechanism needed to actuate it, but just what the switch can do... and i think a capacitive switch would win, since there is no clattering which mech switches have... but i could be wrong, i was a physics major but focused on quant mech, so i think i can understand why i am wrong if someone bother to explain, but i am claiming no expertise in electrical circuits at all)
Using his definition, and his set up, it is much easier to create a machine that can actuate a red/brown/black repeatedly and in quicker succession than quite a few RD, simply because the dome due to the nature of the rubber, does not rebound nearly as quickly as would a spring, since it is in its collapsed state, one could build a RD that flexes harder but one could also insert a stronger spring in the switch, but i would suspect that black would simply beat most RD that exist right now simply because it bounces back faster. I do feel that i can beat most keyboards on the upward rebound if i try (especially crappy RD, i have tried ones where it kinda stick to the bottom if i press really hard, and really messes with DT, so at least for those RD i can speak for fact that they are no good for DT), but i would be swinging my finger back up so fast, i can't come back for a second tap before the key have rebounded sufficiently, that said, i believe we need to incorporate some sort of the mechanism of the human finger in any justification for any switching being best for DT.
I believe that was his strongest argument, the rest feels less justified by firm facts, eg. Red/Brown/Black being more difficult to calibrate. Everything has a learning curve, if we are discussing what is BEST, then learning curve should not be an issue, unless you can show it is not achievable by humans, if people can not bottom out on reds, with no feedback, that means people can train their finger to reach a pretty precise spot and come back up and ride that actuation point pretty well, (i digress but it would have alot less strain on the finger because you are not smashing your finger) i would believe any method relying on feed back from the keys would be too slow anyways or at least slower than someone who have it in their muscle memory.
I am not saying Solutor is wrong in whether RD is best, but i am saying that his proof falls short of proofing that RD is in FACT the best.
I can discuss more about what i feel is best for DT, but their justification are more like my opinion, and so i await Solutor's further enlightenment and see if they assist in turning them to facts, cuz having facts back up my opinions is always good.
TL DR, according to Solutor's "proof", the bottle neck for repeated presses is most likely the upspring of the key, which IMO rubber dome would lose
