We used 100 volunteer golfers to test the new Callaway Diablo Edge Irons. This is what we discovered.
Callaway Diablo Edge Irons are designed to place the sweet spot where most high handicappers strike the ball.
The centre of gravity is low - making higher shots easier to achieve, and the sole of the club is shaped to improve the results of fat and thin
shots. And these innovations work extremely well. Our high handicappers hit far fewer really bad shots with these clubs.

They also liked the feel of a solid hit on most of their shots - something they have not been used to!

Mid handicappers who strike the ball reasonably well, found the sole of the club too chunky.
Our verdict
An ideal choice for beginners, high handicappers, and poor ball-strikers who hit a lot of bad shots with their current clubs.
For mid handicappers and half-decent ball strikers, there are better options out there for far less money.
Golf - The Top Ten Game-Improvement Irons
Callaway Diablo Edge Irons