As are some of the brass, pitched percussion and assorted other sounds. The wavesequenced patches such as 'the wave police' are trully inspirational but they become a bit gimicky after a while. These are crappy. Some of the synthe basses are not bad considering that this synthe is digital. I also like many of the tuned percussion and harplike sounds.
Organs are also particularly well done.
As mentioned above, the onboard effects are quiet good even by today's standard. I have never taken it out of my studio and never had a problem with it. I have been playing since 1980 and also teach piano and organ as well as co-running a Midi based studio running various Korg and Roland Bits. If you don't care about programming or editing, then simply get the Wavestation SR and be 'wrapped to the eyeballs'. I only wish that Korg didn't give up on the Wavestation series.