+1 for Universal... but only slightly...
I still keep Unique in my powder collection. I did find Universal to be "slightly" cleaner in my 9MM. Others here are correct saying higher pressures will make both burn cleaner. My experience has been Universal is again "slightly" less sensitive to lower pressures when I tested like loads of each powder in the same case, over the same primer and behind the same bullet. YMMV....
E.
I still keep Unique in my powder collection. I did find Universal to be "slightly" cleaner in my 9MM. Others here are correct saying higher pressures will make both burn cleaner. My experience has been Universal is again "slightly" less sensitive to lower pressures when I tested like loads of each powder in the same case, over the same primer and behind the same bullet. YMMV....
E.