what you guys think about these air purifiers from sharper image? do any of you have one and does it work?

i have so much dust build up in my bedroom, and i find myself sneezing so i think i might try one of these, but they are damn expensive.

http://www.sharperimage.com/us/en/catalog/...d=307&catpage=1

 

ive wanted to buy one for a while too, but since i dont know if it really works, i dont want to shell out almost $300. buy it and tell me how it works

 

I was told that those don't work well at all for filtering air. If you want clean air, you should go looking for a HEPA filter.

 

I have read and read that they are crap. They produce Ions which i read that are not good for some people.
Filtering sucks and it doesnt remove odors like smoke.

http://www.quackwatch.org/14Legal/ionicbreeze.html

Consumer reports also said its not good at all.