We have owned an older version of the mighty mite for over 10 years. It was starting to have issues from use so I decided I liked the original might mite so much to buy a new one. The head on this might mite is a bit different. You have to push a piece down to raise it up so it glides easily over the floor. Its a feature I always forget about and have issues when I first start to vacuum. The head is a lot bigger than the last but I am not sure more efficient. It makes it harder to get into some areas the old one fit perfectly.