I love this product. I rated it as a "9" because the bowl does stain a bit. Performance It does leave some unpopped kernels. They can, however be placed back in the microwave oven and for a 2nd chance! Settings/Features There is no bulky appliance to store or leave on your countertops. Bowl can be used to hold other snacks such as chips and pretzels. Ease of Cleaning It cleans with just a quick swish of dish detergent. After using this bowl for over a year on a very regular basis, the bowl does have some minor staining, but otherwise no problems. Ease of Use I just use 1/3 cup of popcorn kernels, then place the lid on top and put in the microwave for about 2 to 2-1/4 minutes. I generally let the bowl cool and make a 2nd batch. When we are ready to eat the popcorn, I fill individual bowls and place in the microwave for about 30-35 seconds. This way, we can use whatever toppings we each prefer and I do not have to make the popcorn every time. My main caveat is the bowl gets extremely hot, so potholders are definitely necessary. Durability Our bowl has over a year of very regular usage and is still going strong. For the small price, I would surely replace if and when my bowl fails.