Difference between Shift Register and Feedback Node

[MotorHead]

This is a general question about LV programming, but would love to hear some opinions on this...What is the difference between using Shift Registers and Feedback Nodes? They appear to be functionally the same, just drawn differently in the Do Loop. Is there performance differences between the two?

I did some poking around NI website with this question and found some great debates about their use, but most of the discussion were referencing a few rev's back of LV. Is there a definitive answer on when to use one over the other for the latest revisions of LV?