I was given the One Touch battery operated one. It cuts below the rim, and doesn't leave sharp edges. Harder to use the lid to drain the can, but I like it better than an electric can opener. It doesn't always work on tiny cans like tomato paste. But it goes in the drawer, which is a big benefit.

I use a hand turned one that cuts along the side edge.
wouldn't want to go back to the kind that cuts on the top.

will probably go to a battery operated one in the future, but will keep my hand crank one for back up.

Like desertsteph, I gave up my electric for one that de-crimps the lid from the can. One day, I looked at the disgusting can opener blade and got rid of it! I only had one can of beans that I could not open with it. So much cleaner! Oh dear, am I turning into a germaphobe

Never had one. Probably never will unless I have hand strength issues. To me, its one more thing to clutter up the counters.

I have the one-touch like plllog. Love it.