Stuck: Help me find a model for my bedroom (I have MCAS)

Live in the US, bedroom is 11ft by 12ft. 9 foot ceilings. I have MCAS, and the house does have dogs (not mine, can’t do anything about it unfortunately). I keep them out of my room, but I have carpet (also not by choice), so I need to go a little overkill with my air purifier specs.

MCAS for me just means I get horribly congested, can’t sleep, and get super itchy if the room isn’t properly filtered. I have a levoit 300 right now and it is not doing much.

My budget is any model ideally 100-400 dollars. If a really good model is 500 or something I can bite the bullet, but I can’t go any higher than 600.

My main concern is allergens. Doesn’t have to get rid of odors. Can’t do an ionizer, but I’m okay if it comes with one that I can turn off.