Oud oils Hud, Nuh and Imphal are three distinct Hindi oils. Royal Imphal is from Manipur, Oud Nuh is from Meghalaya and IIRC Oud Hud is from Karbi Anglong, the original locale of the feedstock likely has something to do with scent profile and other factors that account for their differences could be distillation parameters, design, materials, etc. Anyway, Oud Nuh is red, like taking ancient Koh Kong feedstock to the heart of Assam to be traditionally distilled; IMO it's also the most "Arabian". Royal Imphal has indolic barn opening followed by more "orange" type notes, dried mango, apricot, etc. They're all beautiful oils, Oud Nuh is my favorite with the biggest projection and I think Royal Imphal is the prettiest with some Yoshi type notes accompanying the barn.