I'm on exactly the same wavelength.
Lately I've been thinking very seriously about selling every single piece of gear I have and switching to just a midi controller and a souped up computer.
On of the instruments that I would really miss though is my Roland keyboard cos it's got a very good piano sound.
Right now I'm in the process of downloading some MP3 demos of "the Grand" to see if it's worth considering as a future alternative.
However, the other big problem is that (I don't know about you but...) I've yet to see a single midi controller keyboard that really impresses me in terms of features and value.
How come hardly any of them have assignable midi controller knobs???? And how come hardly any of them have a full set of keys????
It's a drag.
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David