I have used the 4 qt Programmable Slow Cooker numberous times and I am very pleased with this product. The two main features of the 4qt Crock Pot Slow Cooker are that its programmable and the controls are digital.
By being programmable, I am able to detrmine ahead of time the length of time I want my meal to cook and after it cooks for that period of time it switches itself to warm. This allows me a little more freedom throughout the day without the worry of overcooking my food. There are 4 differnet time settings one can choose for slow cooking. (my old crock pot only has two). The second feature that I I like about the 4qt Programmable Slow Cooker is that the controls are digital. I always know exactly the setting I am on without having to guess. The setting markings on my old crock pot wore off in less than a year and I sometimes get confused as to what setting I am using.