In all things, you get what you pay for (though you can overpay for stuff... expensive does not always equal good). Down will be more expensive than synthetic due to material and labor costs. I bought one of the Jacks R Better original down underquilts back in 2004 or so (I don't even think it had a name... there was just one model), and it's still going strong. If I had it to do over again, I'd have paid the extra $$ ($30? at the time?) and get the overfill. JRB customer service is excellent, and I am happy.
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