I have a 3-cup French press and a 1-cup. I've noticed that I make better coffee in the 1-cup, even though it's a cheap one that I picked up only for the rare occasions when I only need a single cup. (The issue isn't that the coffee sits for a while in the 3-cup. The coffee from the 1-cup is better than the first cup I pour from the 3-cup.) Is there a general rule that less is better? It would be a pain to brew three single cups for the three that I need every morning, but it may be worth it if the quality is better.