The unit comes with 9 CDs. There are some superb samples on the CDs. Piano samples are killer. Organ samples are killer. Synth pads are killer.
Drums are killer.
There is nothing that this thing cannot do. You can even go wild and create you own sounds using samples and its built-in synthesis engine. One thing I've noticed is samples that go in dry through analog will have a slight airy quality about them. This can be a good and bad thing. For the most part, especially in trance, it's a good thing because you want your samples to have an ethereal quality.