Rob,
I think, (could be wrong though) the reason consumer reports is different, is that they are checking for how quickly the airflow drops off as the bag fills. The bags in the guardian are larger in size than the regular style c canisters. Hence more surface area to filter. So in theory, it won't clog as quickly. But when starting out new, the older design still comes out ahead. Just my two cents worth.
Vernon
I think, (could be wrong though) the reason consumer reports is different, is that they are checking for how quickly the airflow drops off as the bag fills. The bags in the guardian are larger in size than the regular style c canisters. Hence more surface area to filter. So in theory, it won't clog as quickly. But when starting out new, the older design still comes out ahead. Just my two cents worth.
Vernon