Air Purifiers

I suffer major allergies from dust, pollen, mold and pets. I want an all-around purifier that helps with these and gas and chemicals.

I have done EXTENSIVE research and YES I know IQ Air is best but it’s rather large and expensive. Blue Air and Austin Air are highly rated as well, but they’re rather large for my bedroom. I have been looking into the Sharp Plasmacuster (not the model with the annoying upkeep of the humidifier) and Rabbit Air as well, which are more stylish and a tad cheaper. Anyone with experience with any of these or suggestions?

is austin air pet mechine is best in air purifier for dog odors and dust in your house?or any reccomendations for air purifier gor dust and dog odors for the house?

I have an Austin Air home air purifier with HEPA filter, and the filter is a large metal drum. Can I recycle this, put it in the regular trash or do I need to call for special pickup?