Dan,
Yes, I own the Korg PA4X. I am very happy with it after working
with the Korg OS. A friend of mine, Steve from R.I. has worked
with me to learn the Songbook and the Setlist, two very nice
features of the OS. The Korg is nice and compact compared to
the Yamaha Tyros 5 which I previously owned.

I have had no hangups so far and the screen adjustment mechanism
is working OK so far. Sorry to hear a few owners have had some
major problems with the adj. screen. Only way to really know
if Korg is for you is to go to a dealer and demo. one.
My dealer is Frank at Audioworks Ct. His prices are the very
best and he is a honest and caring dealer as many folks here
on Synthzone will attest to. Regards, Lloyd