Go with the lansky.....It is not my favorite choice but the other type you have doesn't really 'sharpen' the edge....it rips strips of metal off the blade......Now if you have no other choice....then that is (to me) somewhat ok.....so long as you know what it is doing......yes it will put a better edge onto what you have....but I leave it for 'sharpening' the edge of my tri fold shovel or for the machete (only in the field) (otherwise I sharpen the machete too....and yes it will shave hairs)...I used the lansky years ago....it is a good system.