"I have found that synthetics can take more abuse than down."

They are definitely cheaper and faster to wash. This makes them the better choice for rentals, schools, young children etc. where they need to be cleaned frequently.
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Head to head I saw no difference in insulation qualities between various brands and insulation types of synthetic bags when used constantly by a wide range of people.

Some outdoor ed instructors and guides liked North Face because they had a lifetime warranty and they would get a new bag every 3 or 4 years for free after the old one wore down. If Wiggy's does that too, that would be an advantage. As far as I know, the institution did not ask either North Face or Wiggy's to replace bags after they lost loft. That would be unseemly since it was wear, not poor design or craftsmanship.