Cooking with a crock pot - temp I'm thinking about getting a slow cooker, so I was checking out some recipes.  Many say something along the lines of:

Cook Time
4 - 5 hours on LOW
2 - 2.5 hours on HIGH
Slow Cooker
4 - 4.5 Quarts
6 - 6.5 Quarts


Two questions:


Is it better to cook it on low or high? Obviously the time will be different, but will it usually taste better when done on low?
What is the stuff under Slow Cooker referring to?


Thanks
Cooking "Low and Slow" allows the heat to break down the connective tissues that cause toughness in meat, creating a more tender dish.  

As for what the "Slow Cooker" is referring to, that is the volume of the crock pot.