This is the type of question that is all to often asked. There is always the search for the golden formula. It is the same as asking how long should I develop my film in X or Y, or what is the best film, or what EI should I use, etc.
I am sure that over the years Mr. Worth has used a variety of developers. None of them were the magic formula.
If you want to do work the quality of Worth or other masters you have to do a lot of hard work. You have to do your own film speed tests and your own dev. time tests. You should stay with the same film, film developer and paper for a long enough time to learn how they work. Joining the film of the month club, or the developer of the month club won't help. Also, go to exhibits and see how much a good black and white print can glow.
Then devote yourself to the craft for many years. Mr. Worth has been working at this for 40+ years.
steve simmons
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