Some would call buckling spring style (which inm keyboard use) surperiour to all the mx style switches. It is definitly on the more tactile end, so having aches doesnt surpise me. The variety in MX switches is bonkers. A well known switch collector called Theramingoat has over 4000 different ones. So if you get a hotswap board (keychron is not a bad place to start, but you can find better value-board for the same money nowadays), you can definitely find a switch of your liking. Check out milktooth, you can get a sample pack of different switches to try. And return the ones you dont like.

I've had three keyboards with red switches, two from Ducky that were Cherry switches and one from Lenovo that may be another company's switches, but feel the same. None failed on their own but I spilled drinks on the first two and they were never the same. Maybe check out some of the lighter switches, even reds are way lighter than my old 1990s model M. https://www.cherry.de/en-gb/products/switches

Quite likely - the buckling spring switches in Model M are quite stiff as far as keyboards go. Brown switches are a good choice if you want a light switch with some amount of tactility.

I can give a third vote to the rough comparison between a keyboard with brown switches, and a Model M. I've got both, and like both.

There is (deliberately) not much consistency or uniformity on the switches in mechanical because keyboard nerds are such a picky bunch. I got the Keychron Q11 specifically because the switches could be changed out. I replaced the Brown switches it came with with some "Zilent V2" switches with a much higher activation force.

It can be a dangerous rabbit hole if you let it, but if you're just looking for an approximation of the Model M but that requires less force, then something with "Brown" switches might be up your alley. This one in particular has a similar aesthetic, comes with Brown switches as an option, and at a pretty good price.

https://www.keychron.com/products/keychron-c2-pro-8k-qmk-via...

A model M requires so much force a cockatiel can walk on it and not press a key. Most tactile keyboards use a little less force.

I find linear switches make my hands hurt because they don't have a clear activation point and I end up pressing too hard. Cherry MX Brown switches and equivalent are a sweet spot for me. I also liked the lost-to-history white ALPS switches on the Apple Extended Keyboard II