Guys, need to ask.

I wanna buy an air purifier today since 12.12 budget below 400.

Should i go for :

1. Sharp FPF30LH
https://www.lazada.com.my/sharp-shp-fpf30lh...time=1513060626

2. Panasonic Air Purifier PSN-FPXJ30AHM
https://www.lazada.com.my/panasonic-air-pur...tem_page.bottom

OR

3. Khind Air Purifier HAP30 with Remote Control 3 Year Warranty
https://www.lazada.com.my/khind-air-purifie...tem_page.bottom


Since my apartment exactly facing highway, really have lots of dust and sneezing every morning.

Hope u guys can help!