Slow cookers are wonderful, as are tagines, chicken bricks, casseroles (i mean the actual container, not the food), marmites, croc pots all produce beautifully cooked meat especially cheaper cuts where the fibres of the meat need long slow gentle cooking to break them down, giving the other flavours you've added, eg vegetables, herbs, wine, spices etc to amalgamate and infuse the food. My advice to anybody who wants to take cooking seriously is, buy the best equipment you can afford, (this goes for knives too) a good set of heavy bottomed saucepans will save you time, money and fuel in the long run as they hold the heat - where as a thin bottomed one will quickly burn and the heat dissapates quickly and unevenly spoiling the food.