Does anyone know if foothill filters are good carbon scrubbers? I dont know whether i should get a htg supply 170cfm 4"x12" filter with 4 pounds of carbon. Or a foothill filters 240cfm 8"x14" filter with 6 pounds of carbon. Both are enough for my space given the math. Just dont know if the foothill's are any good. both about the same price too. 8 X 14 ACTIVATED CARBON FILTER ODOR SCRUBBER 240 CFM - eBay (item 350215910607 end time May-16-10 05:32:45 PDT) heres the link to foothill filters.