Great discussion and a lot of excellent points. Speaking strictly from the point of view of manufacturer preference, I have had Korg, Roland, Technics and Yamaha boards over the last 20 years. In overall performance, ease of use, support and bang for the buck, I have become a dyed-in-the-wool Yamaha player.
I love my PSR 9000 but it is too heavy to take on gigs. The 740 is another favorite of mine, but having to go through the Function Key to get to numeric registrations was a bit time consuming on jobs. Having only 3 User Slots for styles for external styles was also a problem for me.
Those concerns vanished with the introduction of the 2000.
The 2000 has become my major working tool and is, without a doubt, the most practical board for my purposes...quick set up, good VH, intuitive and easy to navigate, quality sounds, lightweight, looks good, an excellent variety of styles and editing capabilities, loads discs super fast and lets me set up the next registration while playing the current one with minimal button pushes.
The only downsides (and minor at that) are the lack of User Memory (but it loads styles from discs very quickly) key feel (which I got used to) and the little extra effort I feel necessary to compensate for lack of professional quality construction.
But, overall, it is my board of choice and I have just ordered my second one for back up and use at home.
Eddie