I used a proper IBM Model M as long as I could. Nothing felt as good (except maybe the rarer Model F). But eventually I had to replace it.
So I got a sample pack at one point and was easily won over by Kailh bronze. Those are the next best thing to the buckling springs.
My partner hates the clicky sound though so I also got a set of the quieter purples. Those are almost as good.
Eventually I switched to Holy Pandas because I wanted something even better. They were expensive. Honestly, I think I prefer the Kailh bronze, for both work and gaming.
Just checked the Kailh website and looks like they have totally different models now so oh well, maybe this is no help.
But fuck Cherry. Their switches are inconsistent garbage.