This is a dilemma that a lot of riders find themselves in. The question that what is better, the old school chain, a belt or a shaft, has a lot of different sort of implications.
You cannot paint a black and white picture of all three of the chain, belt, and the shaft and say one is superior to another.
There is a lot to consider when making the decision on what will be best for your bike. The chain, the belt and the shaft drive can be installed on your bike but first of all, you need to know what these systems bring to the table.
Different types of bikes require different types of systems, although you can install any system from the chain, belt or shaft in your bike, there are particular types of bikes that are more likely than the other to run on a particular system.
To clarify the difference and state the pros and the cons, the following video will explain all three systems thoroughly and entertainingly.