Comparisons and advocacy

I like to use a Lego analogy. Lets suggest that you want a solution that maps to your needs. With a commercial solution it is like building a circle with normal lego where you can only use quite large bricks and it will fit in some areas but not in others and you cannot bend it or make your own bricks. Moodle on the other hand is like Lego Technique where the parts are much smaller and make a much better circle and with a little pulling and pushing it can be bent to fit. Also because it is Open Source you can make your own bits.