It doesn't always come down the individual person's taste when you share settings. Component tolerances can vary widely from tv to tv, even within the exact same model line and build. So what looks great on one person's tv can look like crap on yours, and when you factor in the different viewing environments as well, that's another variable in successfully sharing settings. Using a disk alone will not calibrate your tv, only help you to make certain picture adjustments based on REC.709 standards. But, it can definitely improve pq depending on how far off your tv is out of the box. You're always best to adjust your own settings and not rely on someone else's. Sharing settngs can work if you're lucky but they have more value in teaching you how the different settings interact with each other. Setting don't last forever because components age. And, depending on the quality of the mfrs build, you may have to periodically check your settings and make adjustments and if you know how to do that, you can keep your pq looking great for a long time.