Levoit Core 600

And a Levoit Core 600 good size for living room.

Even a Levoit Core 600 will perform as well or better than the Everest Air, for 100 dollars less. (Core 600 is 390CFM vs Everest Air is 350ish, Everest Air has more expensive air quality sensor and little larger filter with maybe a little more carbon. Core 600 still have carbon, and air quality reader, and is more powerful.)

So something like A Levoit Core 600 would be good in larger/main area. ... Core 600 3,000 sq feet coverage meaning it will clean the air 1 time in 3,000 feet.

The Levoit Core 600 is not on that chart, but would be very high, as 390CFM for 300ish bucks is one of the best value's among purifiers. Probably the best at that size.

But as you have no budget I would just get the Core 600, which is much powerful than both, at 390CFM power. . . the Core 600 is more powerful and more affordable wheras the Everest Air has a better air quality sensor and might have some more carbon in the filters. So the Core 600 is a great choice imo.

So something like a Levoit Core 600 in main room will likely get you excellent air quality there. (3,000 sq foot coverage means it gives 1 air change in 3,000 feet. For "good" you need 4.8ach, air changes per hour, for excellent 6+)

Levoit Core 600 is a good alternative, with nearly the same performance. (All 3 essentially tied in recent testing, with over-priced Dyson.).

Levoit Core 600 is a great budget option to get 390 CFM power and that would get you 8+ ach.