Several months ago I purchased a Starfrit manual can opener and I love it! It has soft comfortable knob and handles which turns easily for both me (the righty) and my husband (the lefty). The opener cuts the entire top off just below the rim not in the rim or in the top of the can. It leaves no sharp edge. So a little spillage is possible if you do not keep the can flush to the counter top when opening. However, spillage has been a rare occurrence thanks to the smoothness and ease of use of this can opener. I wish more kitchen gadgets felt this good to use.