Which DGX? All the ones I played were basically unweighted (or close) and completely un-pianolike (and worse than most synths )

You have to remember, the world isn't JUST Yamaha. Roland's TOTL is 61, too. But they have (or had, or will have ) a 76 below it. Korg's PA2Xpro and PA800 are almost functionally identical (although at least they don't rip you off by having the 61 the most expensive!).

But just because Yamaha don't do something doesn't mean it can't be done!