We always use the safety edge type can openers at our house, but our previous one broke, and we were researching a new one when we saw this Kuhn Rikon one at the local store. We liked this one because it had all the gears exposed, so it would make it easier to clean. We were fairly certain the last one broke from crud and metal filings getting stuck in the gears, which can be a problem with some of the safety edge can openers.
We wound up getting this exact one, complete with the weird lid gripper thing (I have no idea why this would be necessary on a can opener that's supposed to open lids and create unsharp edges.) The first can we tried it on (tomato sauce,) it was just terrible, wouldn't open it for anything, and just made a mess out of the side of the can. Yes we read the instructions, and reread it, and we marveled at how it just appeared to do something but in the end never managed to do more than dent the edges of the tomato sauce can.
We brought the opener back the same day and got a different safety edge brand (no name mentioned) with a lifetime warranty, and opened the can in the first try, mangled and all from the kuhn rikon. This can opener almost destroyed an entire day's worth of eggplant parm prep by being a defective lemon.