ALLERGISTS: Ionic Breeze vs. Hepa Filter :please read question?

All of my family suffers with allergies, I have heard a lot of good things about the Ionic Breese. Recently someone told me that buying that is a waste of money and the Hepa Filter air purifier is better but they did not say why- before I purchase one, I would like some opinions, which is better Ionic Breeze or a Hepa Filter purifier and WHY?? Price is of moderate importance- I want something that will really help with our allergies and is not just a fad. Thank you for serious aswers- I don’t care how long the answer is as long as it is informative and honest.