I had a Black & Pearl Duofold Ring Top for a very short time before it passed away.
To console myself I got a Green & Pearl Lady Duofold.
The Pilot Prera & Sailor Sapporo are my modern favorites.
The group picture shows my vintage pens: Three BCHR Ringtops; Lady Duofold; Sheaffer Jr; Waterman Ideal #3; and Esterbrook SJ.