A digital image (HDMI, DVI, Display Port) is always preferred over analog (VGA). VGA analog interface can be used for high definition video, including resolutions of 1080p and higher, the transmission bandwidth of VGA is high enough to support even higher resolution playback. The issues you run into is picture quality degradation depending on cable quality and length. Obviously, how discernible this degradation is depends on the individual's eyesight and the display, though it is more noticeable when switching to and from digital inputs like HDMI or DVI. HDMI has improved audio and video capacity, performance, resolution and color spaces. They continue to develop newer versions and it has optional advanced features such as 3D, Ethernet data connection, and CEC (Consumer Electronics Control) extensions.