FinalWriter was quite good, but lacked some features available in the last version of Wordworth.
The most useful feature of WW to me was its ability to create Postscript documents using Postscript fonts, which can then be printed on any printer using Ghostscript.
I used it to write and print a book, and it arranges odd and even pages with different margins, which is really useful.
The only trouble I found with WW was some difficulty in installing and then setting up the fonts, but once this was sorted it did everything I wanted.
Now I still use it with Amiga Forever for some work, because it's easier than Word.