The personal sized Keurig B31 Personal Brewer is a second-generation model that lets you adjust the size of the brew. Using convenient K-Cups, the B31 is more than a coffee brewer. It's a hot beverage maker that fits in a very small space. It's great … see full wiki
I love the Keurig K-cup coffees. I had an "elite" brewer in my old apartment. I got a mini for my new apartment because I didn't want to pay the price for the more advanced "elite" brewer. I'm finding the mini OK, but it's not nearly as good as the "elite" one. This machine can only handle one cup at a time. You have to refill it with water every time you want a new cup. There are no settings to automatically set the brewer to make a certain sized cup. Also, it takes a while to heat the water. It's certainly not a bad machine, but it's probably not worth saving $20-30 bucks by getting this one if you drink a lot of coffee.