My point was more about what I would call the "operating personality" of the instrument, rather than the sounds.

I think we all accept that ALL the high-end keyboards sound superb these days. But if you're a player used to the way a Roland keyboard "works" (and at its most fundamental level this has hardly changed since the first E's of the late eighties), it doesn't matter how much better the pianos or the guitars are on a Yamaha or Korg are. All that accumulated interaction with the Roland way of of doing things is a very powerful draw to another Roland.

It's certainly why, for all my brief flirtations with other brands over the years, I always end up back with an E.