I have bought all of the above and they don't last long enough to justify their cost's. I was browsing through an Antique store and came across an old one called ''Swing Away'' it attaches to the side of a cabinet or where ever you want to put it. It is from the late 50's /early 60's My Dad has been using it for over 3 yrs and loves it. It is easy to use and stays sharp. He can't stand the noise the electric ones make-