In my opinion, it's about 6 of one and half a dozen of the other. It's more convenient for a frequent user to mix from a concentrate, and there is less likelihood of the concentrate going bad for a frequent user. Some may not like to use caustic alkalis. Some may not even be able to get the hydroxides these days. There is something to be said for consistency of results when using a concentrate, but not much. I would say try it with a quarter recipe, which may develop as many as 50 rolls of film depending on dilution. It won't cost you much to throw it away if you don't like it.
Originally Posted by aligndont