Air Purifiers for Dust and Pollen

I have horrible allergies. Bet you didn't know that one. I suffer terribly at times. Not only am I allergic to outside pollens, but also to dust. Certain smells like those from plug in air fresheners give me terrible headaches.

I was thinking about getting an air purifier for my home, something to take the pollen and dust etc out of the air, and I was looking for a site to give me a comparison of air cleaners that remove the dust and pollen from the air in my home. I did come across this site, Aircleanersguide.com that had a huge amount of information. Of course Mini Bug needed my attention and the baby started fussing, so I had to put it all on hold. But as soon as I get a free moment I will go back to investigate and read and decide which air purifier is best for me.