I have not read all the posts yet but want to add my 2 cents. I have both sharpeners, I don't like either one, I don't think they work. For the price you can get the blades I just change them out. I buy 5 packs with 40% or 50% off coupons. A friend buys in bulk on ebay and sells me some at her cost, sometimes as low as $1 a blade. Get together with a couple of friends and split the cost on ebay. These are all brand new blades still in orginal pkg.