You are hearing these samples on the radio right now.
I own one of the largest studios on the east coast. I am just one of the larger pro studios using these samples as per many discussions with other producers. I dont care what keyboard manufacturer roped you in with promises of grandeur in their products, there is not one stand alone that comes close to matching the perfection that is Ministry Of Rock 1 & 2. From heavenly guitar riffs to stomach turning bass lines and head pounding beats, there is not one product on the market that replicates the sound and dynamics of these instruments as well as East West's collection. Without having Slash, Bonham and McCartney in the room... You will not reproduce these instruments any better than with this offering.
I recommend the Platinum Piano collection, along with any other of East Wests products also. They use pro players with the greatest classic instruments to get the best sounding samples on the planet. If you dont believe me, just listen to your radio... and try to tell which songs are using these samples or the real instrument.