Does anyone have any opinions on the Senseo one-cup coffee maker? I'm thinking of getting it for my brother. He's not a huge coffee connoisseur but I want to make sure it makes drinkable coffee. If they Senseo isn't good, does anyone have any other recommendations for a single serve coffee maker? He's in medical school so I'm sure he wont want to brew a whole pot before heading to the hospital at 5am.