Can opener works great.  It is easy to line up the blade on the can.  Cuts cleanly, leaving no "splinters". I have only used the knife sharpener once and it did the job.  My previous opener did not have the option to lift the magnet away from the lid, a feature that is handy on this model. The added bottle opener with packaging cutter is a nice addition that does get used more than I thought it would.  My only caution is to watch heavier cans as they do allow the opener to tip forward.