Airmega 250

Per the AHAM 2/3 rule, a 732 sq. ft. apartment would need minimum CADRs of 488 CFM. The most stylish is probably the IQAir Atem X. It's made in Germany. But it has a top Smoke CADR of 415 CFM. It's also very expensive at $1,399.99. The Coway Airmega ProX has a top Smoke CADR of 568 CFM. It has wheel

Since you already have a dust extractor with HEPA filtration, I don't know if you need something like the Coway Airmega 400* unless you expect a smaller filter to saturate quickly. *The Airmega 400 isn't on sale from Coway at the moment. I recommend buying it when it's less than $400. Consumer-grade a

I would look for Clean Air Delivery Rates (CADRs) of 200 CFM or greater for allergies. Coway is a higher quality brand. Alen offers a "lifetime" warranty on their purifiers so long as you meet certain conditions. I would normally recommend something like the Coway Airmega 250, but it's not on sale.