I got the firmest one. I can do hundreds of pushups in a day, but this thing was a bit too firm for me. It has about as much give as a racquet ball. It also makes my hands a bit sticky, and stinky, because it is made of a sort of tacky gum-rubber. Which is neither good nor bad, it seems like a material that will hold up well. What I've read is with hand exercises if you can't do many reps with it, it can do more harm than good. What you actually want is something that doesn't give too much resistance, so you can do lots of reps with it, because that will limber up your fingers and increase blood flow. I think I probably should have gone the step below the firmest. The egg shaped one is about the size of an actual egg.

This is the most user friendly, helpful hand exerciser I have ever tried. I am 77 yrs old with arthritis and I keep one by my bed, and one by the TV. Easy to pick up and play with and it's not a big deal. I recommend the XL even if you have small hands. It isn't much larger than the small one but the shape is easier to use. I have the red and the green ones. They are the least resistance but for my hands they work perfectly. If you have any stiffness in your hands and/or fingers, these really feel good and keep your hands more flexible.