Prodigy- Symmetrical, earlier, smoother, overall weaker than the VG
VG- Asymmetrical, tad longer, smooth but stronger than Prodigy.
Overall, the VG is a step up from the Prodigy. The Prodigy would be the benchmark and as you migrate in you would pick up the VG to continue to chase in when the Prodigy isnt recovering. Another scenario is, when you're using the VG and it gets to violent or uncontrollable, you would pick up the prodigy to tame the backend.