I use my silver Revlon eyelash curler faithfully, but when I forgot it at home during a recent vacation, I bought this Sally Hanson curler to tide me over.
This instrument produces a decent curl, but at the expense of a few lashes, a few tears, and a lot of your sanity. I nearly went cross-eyed trying to see what I was doing because you can't get a good view through the curler with the eye you are working on. The sliding parts on the side pinch the delicate skin surrounding my eyes and also ripped out some eyelashes. The angle between the handle and the curling part is such that it makes this tool awkward to use, and the rounded part of the head that is supposed to lay on your eyelid is too straight. These flaws make it difficult to use comfortably.

I've used 5 types of eyelash curlers and this was definitely in the bottom half.