Every day, at least one of these machines aborts mission about two ounces into what's supposed to be a cup of coffee (nevermind how many ounces you'll get - you just have to guess! There are no settings to indicate how much coffee you want!), and all of them spit the coffee in about eight different directions. A literal spray. Move your cup to try to catch the stream of coffee it's spitting, and the machine will detect that the cup isn't under the spout and stop brewing. Hold a paper towel in front of it to protect your clothing, but that won't stop it from running all over the counters and into drawers and cupboards. We probably spend 6x as much on paper towels now as we did before we replaced our Keurigs with these abominations. The instructions on the display aren't clear; it doesn't tell you ahead of time, for example, that you'll need two envelopes to make a particular drink. The waste receptacle is small and fills up quickly and has to be emptied frequently. Each envelope is a lot of packaging for very little coffee and of course my office only supplies Nestle company brand coffees (which are pretty terrible as coffee goes, and I'm not even a coffee snob). There's apparently only one decaf option, unlike other popular single-serve options. I rated it two stars because if you're willing to take the above precautions, are prepared to clean spills for each and every cup, and keep an extra cup handy for potential overflow that could happen since you get a random amount of fluid each time, you can successfully come away with a cup of coffee (and increased blood pressure).