Choosing electrical wires is the same as selecting between PVC cables and rubber wires because both have distinct pros and cons. PVC cables are used in applications where the wires are not moved much since they tend to be cheaper and robust. On the other hand, rubber insulated wires fit in contact with flexible and harsh atmospheres such as automotive or industrial settings way better. It is necessary to analyze the details of your application in order to choose the most suitable type of wiring.