Hi Yoshi,
I played Roland G1000 and VA76.
Then PA1Xpro for three years and now since
a month a PA2xpro.
The Roland keybed was fine. So is PA1XproBu and PA2Xpro. The PA2Xpro is a little heavier that PA1Xpro. (half-weighted)
In my opinion Tyros 2 is fine, but synth-like.
In my opinion PA800 is not as well-built as Tyros 2.
Another thing you must know:
Many users that intensively used the sample functions of PA800 on OS1.51 have problems.
The board freezes or give error-messages.
When you use the sample capabilities of PA800, you'd better stay at OS1.o, until Korg supports a bugfixed OS.
ON PA2Xpro OS1.0 there are also some bugs, but many less that PA800.
Don't scare yourself too much when reading recent posts on
www.korgforums.com > korgpa800-PA2xpro. There are serious bugs, mostly in the sample section, but I'm sure Korg will solve the soon.
As a happy Korg-user I can tell you really can count on Korg, providing many free OS-updates, even until 3 years after introduction of the board.
In your case, I think I would buy (when it has got to be a Korg) a PA2Xpro with a pair of active studio monitors.
On the PA2Xpro the dual MP3 player, 128 MB sample Ram and 40GB harddisk are standard included, and the construction and design (in my humble opinion) is much more classier that the PA800.
But, I also used to be happy with the 76 note keybeds of the Rolands.
Maybe Roland will introduce a G70 replacement soon?