The better the package from PG the better the tracks will sound..... but creativity is only limited by you.
I should clarify this a bit. Even the basic "Pro" package contains real tracks of superb quality. The quality of the tracks does not change as you move up to the Mega-Package or further to the Plus, Ultra, or Everything pak... the thing that does change is the number of real tracks included in the package. The Audiophile version does have full waves in it so the sound quality there will be better as a result, but that is the only one that fits that category.
PG insists that the real tracks are not samples and they are correct, but they are real recordings of the instruments along the same lines as samples but simply implemented in a different manner.
Go to the PG Music site, click on the "packages" link and then one by one the packages and listen to the demos there.