> Worth also mentioning, the key actions on higher-end modern digitals are also pretty damn good these days

I've bought a few $1500-2000 digital pianos (Kawai ES8, Yamaha P515). The action limits tend to show up when you have to play "in" on the black notes. There just isn't enough leverage to allow that to happen the way it does on a grand. Playing something like Bach in F# or G# is not really possible.