This was a surprise gift for Christmas. My 7 yr. old daughter was the one that picked it out for me. I'd never really considered this product before I got it. However, I'm very glad she had such a great eye! It is such a neat little machine and works flawlessly!
Using it couldn't be easier. First you let it heat up, then you put in the bottom half of your english muffin, then your protein (canadian bacon, bacon, or sausage, etc.) then a slice of cheese (I prefer the Kraft Sliced Deli American Cheese), then you lower the next disc with the lever, and break an egg in it, and the yolk too, and finally top that with the top half of the english muffin. Then close the whole thing and set your timer for 5 min. Then you slide the egg slider (remember to do this first, as it will save some frustration with why your sandwich isn't one whole sandwich, lol), and then lift all the rings and you have a delicious Egg McMuffin without ever needing to leave your house!
I also really like that the inner rings can be taken out and are dishwasher safe. Though I prefer to hand wash them, in order to preserve the non-stick coating.
My only regret is that she didn't buy the dual machine, as making each one of these sandwiches can be time consuming when you are making them for a lot of people, one at a time.
Note: The rings and really the entire machine gets VERY HOT, so be careful when handling it.