It may look like an obvious choice – for UEFA Champions League matches, for example, to only watch matches in the final stages of the event.
I doubt this choice – yes, if you want to watch just a match, it’s likely that the final match will be more exciting than a lot of group matches.
But, most likely, the difference between two such matches will not be that high.
I think you can get a good show watching group-stage matches, also.