Air Purifiers

Anyone owns the new sharper image "Hybrid GP" air purifier? is it working well? does the "ozone guard" work? I’ve read and heard so many scary stories about the ozone is toxic. Does the sharper Image’s ionic breeze purifier dangerous? any suggestions?

I am looking to buy an air purifier. I have a fairly small apartment. So I am looking to freshen it up a bit. I dont really want to spend more than 0. I saw the ficus tree one and it looks nice since it looks like a plant. Any suggestions?
http://www.target.com/gp/detail.html/602-3205341-1476617?asin=B0009F59I4&AFID=Froogle&LNM=B0009F59I4|Ficus_Tree_Air_Purifier&nAID=14110944&ref=tgt_adv_XSG10001

I was looking at the Sharper Image Hybrid GP Germicidal Air Purifier. I would get it for like 0. Which is 0 less than advertised. But i heard that they are NOT very good because they dont push enough air through the filter unlike other HEPA filters which supposedly do. Is that true? I also do know that they save a lot of energy compared to other brand filters and you dont have to buy 0 replacement filters every year. I need help please. Also can you please post some reference links. Thank you very much.

http://www.target.com/gp/detail.html/sr=1-11/qid=1180801307/ref=sr_1_11/602-7263026-7027038?ie=UTF8&asin=B000BX56YQ

I just bought that, and it says it has an Ionizer in this. I read about Ionizers and it releases bad Ozones into the area that can cause chest pains, Does HEPA filters prevent that from happening? or do I turn the Ionizer off? or just leave it on and turn it off when I am not in the room?

I was looking at the Sharper Image Hybrid GP Germicidal Air Purifier. I would get it for like 0. Which is 0 less than advertised. But i heard that they are NOT very good because they dont push enough air through the filter unlike other HEPA filters which supposedly do. Is that true? I also do know that they save a lot of energy compared to other brand filters and you dont have to buy 0 replacement filters every year. I need help please. Also can you please post some reference links. Thank you very much.