I would recommend trying L'Artisan Safran Troublant if you can. I own this and agree with several reviewers who describe it as a delicate, gentle saffron.
I think one of the only other scents I own that has saffron is Costume 21, but there is a LOT going on with that one. I don't know if it would be a good one for helping you analyze saffron specifically.
I guess my new SOTD also has saffron: Santal Carmin. Shows you how observant I am.