Most people that own Nespresso machines believe that they can only use Nespresso capsules because it supports the system. Others also believe that if they use a capsule from a third party, their warranty agreement will be void.
This used to be the case but Nestle, the manufacturer of Nespresso, has made it possible for their customers to use capsules from its competitors without risking their warranties. So, now you can get a wide variety of different flavors to try at a competitive price as well as gaining access to great customer service.