I am currently in the process of watching Season 5 Invasion 1 and although I have yet to actually check the running time, knowing how the soundtrack was affected by being time compressed - you could always hear it "skipping" or breaking up - the final series does not exibit this and the video presentation is, quite frankly, very good. Scenes are nice and sharp and the color itself in a word - great. I personaly will find it somewhat difficult to view the earlier black and white episodes as I am now spoiled! It is the same effect when you see b&w shots from WW2 and then see them in color - sounds odd perhaps and now I find myself wishing the entire series was in color. Others may disagree of course but it is also a revelation to hear the audio unaffected by that lousy time compression.