Are you familiar with NotePerformer? You will find a few threads and many posts on it if you search the forum here, including comparisons and renderings of various pieces. (And it has a free trial.)
(It did/does work with Finale also, so you might have some Finale friends who are still using it or presumably it will still install into Finale if you still have it running.)
The reason why I mention it is, if you start looking at orchestral sample libraries (if that is what you are interested in) you might find they do not work so well with your 16 GB RAM. Someone will hopefully confirm as I cannot remember, but NotePerformer should work with your RAM amount and running the trial version will tell you anyway.)
For Piano, many seem to like Pianoteq, a modeled piano, but not using much RAM.
Also many Garritan libraries can be used in Dorico if you are familiar with them from your Finale days here is one thread search for others.
Otherwise as @gdball said, letting us know more about your music goals would help us answer more specifically.