Hi Glenn - I haven't used them, but I think at $100 I'd be leaning toward a cannister that'll give you more airflow and is easier to clean. Do these bags offer a characteristic that other upgrade replacement bags don't? I had a set of the aftermarket felt Grizzly bags that I thought were a nice upgrade from the stock bags, but they were still a pain to empty. I switched to a cannister and don't think there's much comparison. I get alot more airflow and can use a clear plastic bottom bag which is easier to empty...still not pleasant but easier!
Am I missing something?