The designers have done a good job providing loads of "stock" sounds, playable instruments & rhythm loops - the ability to combine up to 4 parts - each with level, 2 sends to built in FX with control, Arpeggiator and Filter.
Obviously a tad out of date, but nevertheless certain to find plenty of use.
In that price range that does not exceed $ 5 in continuous "sale" it would not be fair to compare Xpand! 2 with mythological beasts like Dune, Nexus, Omnisphere, etc, but that "mega synths" must get hurt because every minute many patches and sounds of Xpand! 2 are chosen, not infrequently, in place of their own. David vs. Goliath.