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

No such thing is overkill when it come to air purifier. I run Coway 250 in every bedroom. The benefit of running a decent size unit is that you're able to run it on lower speed and it still manage to output decent cfm.

IQ Air is one of the best as the Health Pro Plus Xe I think does a good 300ish CFM while also having I think 15 pounds carbon pellets + related to absorb odors/VOCs/smoke etc. Although if your allergies are purely particulate based you can get 400CFM of particulate coverage for like 90 bucks with 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.