There was a time when Unique was known as "flammable dirt", but I have used it for 30 plus years and like the way it works in a broad specturm of cartridges, so I'll keep using it.
Alliant re-formulated Unique a few years back to make it somewhat cleaner burning. If you like it, keep using it.
Unique is my ost used handgun powder, followed by Alliant 2400.