I thought I'd give this hook a try: I have chronic pain (fibro), my hands get pretty tired from just a bit of crochet. I've tried other 'ergonomic' hooks that haven't been so good for me.
The Addi took a bit of getting used to, but now it's my hook of choice. Sits very nicely in the hand, it's light in weight and I love the ergo curve of it.
Terrific customer service, so so quick and hassle free. Definitely looking to add a few more Addis to my collection.