I didn't like SS when I tried it. It users the rep range 3-5 for the working sets as far as I remember. This makes sense as the book is strength-focused. However this is just too heavy for a casual lifter. Lifting 5RM, the form and concentration has to be very tight not to screw up. I've gotten small injuries from lifting much lighter than that. Nowadays I wouldn't even consider lifting 3RM for reps without backup - I know that will not end well.