I have the OXO i-Series can opener: http://www.chefscatalog.com/catalog/...code=6w2pfd225
Probably the main difference between this and the other can openers mentioned is that it has a magnetic lever which attaches to the lid of the cans so that when you're done opening a can, the lid won't fall into the can and make it a PITA to remove. Furthermore, you don't even need to touch the detached lid as all you need to release the lid into the trash can is a little push on a 'button'.
My big bro gave me the can opener as a Christmas gift several years ago. Cheap bastard.