Yes, There is a difference in diffusers manufactured just as there are in vehicles, clothes, etc. Depending on what your goal or purpose is determines what is the best Diffuser for you. There are a few other diffusers on the market that may hold up and last as well as perform as well as the one's I've posted here; however, here's what we use in our home and office after spending too much time and finances on lesser products. As always, you do you and make the best choice for you. These are what we use.