I am a wuss.
I use *no* risers. The long step bench I have is the defunct Super Step which is 5 inches without any risers:
When that feels too high (if a workouts moves too fast for instance), then I go down to my shorter Home Step without risers, which is 4 inches.
My step videos on DVD:
Kathy Smith: Step Workout
Kathy Smith: Great Buns and Thighs
Debra Mazda: Let's Get Stepping
Gin Miller: Reebok Step - The Video
Cathe: Basic Step
Cathe: Body Fusion
Cher: A New Attitude
Gilad: Step Aerobics
Gilad: Step and Tone
Kelly Coffey-Meyer: Cardio Blast
Kathy Kaehler: Workout Class
On VHS:
Donna Richardson: Step & Awesome Abs
Weight Watchers: Step and Sculpt
Keli Roberts: Ultimate Step
Keli Roberts: Total Body Circuit Training
Jane Fonda: Step Aerobic & Adominal Workout
I am old school, all the way.