Granted, I am not a big Boss fragrance fan and my second favourite probably is Boss Number one (the real vintage one) but Oud Saffron stands out to me! I love both the darkness, deepness of Oudh and the spicy components of Saffron.
This has both and plenty of it. The slight sweetness to it might or might to be the indicated rose. Probably is, because it in itself has a certain spice or metallic feel to it. Maybe a rose oxide or something similar.
To me, this is as close of a master piece as you might get from a house like Boss on designer perfume shelves.
Only caveat is, I do not think you can wear this in summer. This is dark, heavy, full bodies and radiates warmth. One of the very perfumes of which I purchased a second bottle to keep for the future.