All the good frontends I know of either natively support or use playback components that support DVD images as ISOs. This is far better than VOBs, since the DVD structure is played as if it were being used in a standalone DVD player rather than having to choose the right VOB file. They aren't always ordered the way we expect.
Once you choose your frontend, check ISO support. If it has it, trust me, go with it. Your family and guests will thank you for it.
