Top of hook holds the yarn nicely because it has a good curve to it, not like the ones the constantly snag yarn or make it difficult to do stitches.
Found these give you nice even stitch work, light in weight and have a nice size handle to provide you more comfort with your grip. Worth giving a try!
The only thing that is stopping me from using these is plastic does not allow yarn to glide on the hook as easily, therefore creating more a a pull which in turn makes my arms and fingers hurt more easily. That is the only drawback if you suffer arthritis or you muscles pull easily, plastic is not an answer.