I had a Magic Bullet for several years, it finally died. I worked reasonable well. Would pulverize ice etc, not raw veggies very well. I have a Nutra Ninja now and so far it has chopped up everything I have put into it. Flax seeds, lemons and limes including the peels, spinach and kale all chopped up really well in my morning smoothies. So far it has chopped everything I have thrown into it. I have only had it for a month. I make a smoothie most mornings.