All of the TV's in my house are 37" or larger, HD and are connected to a Directvsource using HDMI cables so I have no reference point on what I want to do. I want to put a small (19" -22") TV on my patio to watch ball games in the evening when sitting / cooking outside. Is it worth connecting a small screen (19-22") HD capable TV to an HD HDMI source or would the picture quality be that much better than if I just used a SD coax cable / SD picture which be much easier to run from the receiver? (40 ft) HD vs SD on small screen? Just looking for thoughts and comments before I buy anything.