The traditional M sets the bar pretty high. The M2 is already a step down, in my opinion, although it is nice and small.
Personally, I like a good Dell AT101, although they do not age well and the "grittiness" is not likely a problem worth solving. If you find another one cheap, you may be surprised at the difference.
The Focus is good and bad, I don't like the bigass Enter and the whites are a little stiff for my tastes, but it is a nice board and has nice key caps. Submerging Alps switches in water is not a good idea. There is too much to risk with tap water, or even distilled water. Maybe alcohol but I would say no. Membrane keyboards can be dunked all day, but not mechanicals.
If you like buckling springs, stick with them and get another IBM. If you want to move beyond the Model M, get a Model F.