I have experimented with this crockpot several times.  There is no difference between the "high" setting and the "low" setting.  Meals in my previous crockpot were done to perfection in 4-5 hours on high.  With this crock pot the meal is not even close to being cooked with two consecutive 4 hour settings on high.  I've tried both high and low settings for several hours and there is no difference.  Wish I had not wasted my money on this 4 quart, Digital Slow Cooker.