After getting frustrated with the crushers I found in various sports shops because they were too easy, I decided to get a #1, #1.5 and #2.These things are awesome. They really train your strength! When I got them, I could barely close the #1, but over the months, I can now do a couple reps on the #2 (Don't cheat though - you gotta TOUCH the sides to each other), and am thinking of getting a #2.5 at some point.However, you want to be careful where you live. I brought these over to Malaysia (tropical, near the equator) - and the humidity just made the springs rust on all of them. So keep them somewhere dry! That's the only complaint I have about them. Otherwise, they're made to high quality standards!