I can't operate a manual can opener anymore, don't have the strength or the dexterity for that and there's a whole ton of choices for electric can openers… And the one I have didn't work worth a damn and just ended up causing me far more aggravation than they need.
Then I discovered One Touch kitchen products. I must admit, I was quite skeptical at first that their advertised with that classy "as seen on TV" logo which usually serves to me as a warning of "this item is potentially crap". But I really have to say, these products are really quite good and ideal for someone with dexterity or strength issues.
I found both of these at Canadian tire, each priced at about C$20. On par with other openers, however I would say these are far superior in their function and would recommend them to anyone.
So if you still can dabbled in the kitchen and need an opener, I highly recommend these.
Pro: very easy to operate, and they work great. They also operate on batteries so there's no cable to mess with.
Con: they operate on batteries, and consequently will sometimes need to be changed.