I love my Keurig. Sometimes I only want one cup of coffee, so it's extremely wasteful to make an entire pot. I also like that I can make any flavor any time. I have a mini, though, and I wish I had gotten the bigger one.
I don't like all of their coffees, but I'm okay using my regular coffee in the reusable k-cup filter, too. That is extremely conveinent. I just have to wash and re-use.
I also get the k-cups pretty cheap here, around $5 a box instead of the usual 10-20 bucks.