I am speaking from ignorance on the Driven product but this is a more noticeable upgrade than you think IMHO. The Busa is a pretty smooth shifting girl OEM, but I was amazed at the feeling of quality the Sato's offered over my Vortex. Don't get me wrong, the Vortex rear sets are great especially for the price but the SATO's are a level or to more refined. I'm sure the Drivens are comparable too