I've been using Organ needles for over 30 years on my White serger, Berninas, and more recently on my Juki LA. It is a Japanese company and ORGAN needles are supplied with every new machine from: BROTHER, JUKI, MITSUBISHI, YAMATO, KANSAI, PEGASUS, CONSEW, TAJIMA, BARUDAN, NAKAJIMA, KINGLINE, EWLONG, TOYOTA, RENOWN, and many more..
My sewing guru from Banash's in Ohio said there is very little difference other than price in the Schmetz vs. Organ. Check out Banach's Fabric online catalog for great prices on both if you buy in quanity.