In reply to HollyJoynes:
My partner has a Carinthia down bag she bought at a Cotswold store about 20 years ago and it's given very good service. The price was quite low for a down bag at that time, but that was because the fill power of of the down was also on the low side. Consequently it's quite bulky for a down bag, but the quality of the stitching and construction is good, and it still lofts as well as ever despite pretty regular use.