All of them have their advantages, but it really depends on which you feel is best for your lifestyle and how much time you have. Some may prefer the sharper, crystal clear images of the Blu-Ray because they have a large-screened television, but for others, the standard DVDs are still excellent quality that simply fit better on their screen. Others want to have the advantage of being able to have access on their phone, tablet, or laptop, so they opt for Video on Demand. Again, remember that you need to have access to an INTERNET connection to view VOD. If you have a more on-the-go life and want to watch the films in places other than the comfort of your living room, VOD may be for you.