Sentencing: desert and deterrence

In this video Matt Matravers introduces the idea and function of sentencing and discusses how the practice of sentencing might be informed by principles of desert and deterrence. He also discusses the significance of the principle of proportionality to sentencing schemes.

You might want to reflect on the extent to which the principles of desert and deterrence are and are not compatible with each other. Do you find either principle intuitively more appealing? If so, which one? Why?