eastcoastwest

I'm getting a respirator but I need advice on which one.. I found a really cheap one but it seems too good to be true... http://www.amazon.ca/Cartridges-Anti-Dust-Respirator-Industrial-Chemical/dp/B009V6BMTC/ref=sr_1_3?ie=UTF8&qid=1378650166&sr=8-3&keywords=respirator http://www.amazon.ca/Safety-Works-817664-Toxic-Respirator/dp/B0009XW3ZS/ref=sr_1_8?ie=UTF8&qid=1378650166&sr=8-8&keywords=respirator http://www.bombingscience.com/catalog.htm?item=3732&ret=http%3A%2F%2Fwww.bombingscience.com%2Fcatalog.htm%3Fpage%3D1%26keyword%3Dgloves http://www.uline.ca/BL_1091/3M-5000-Reusable-Respirators?keywords=respirator the last one costs an extra $20 to ship, but I could get other stuff with it...same with the bsci one. What would you recommend from these or others? I'm in Canada if that helps...