I received this complimentary Keurig K express single from Keurig and Influenster in exchange for my honest review. I appreciate the compact design and how it fits into a smaller space on my countertop. The water reservoir is on the back as opposed to the side. So it makes it easy to slide it into a small spot. After 2 cups of coffee, the reservoir is a little less than half full. If you are a heavy coffee drinker, you will need to fill the reservoir more often.but for me, the amount is just right. The machine did not require a long time to heat up and was pretty much ready to use on demand! Awesome perk. The flavor of the coffee is actually accurate on the strong setting AND it didn't require a ton of time waiting for the coffee to steep through. I even used the 12 oz cup setting and it wasn't watered down like others I have tried. So overall, this is a convenient and efficient Keurig model. I will recommend to friends and family.