Music: What is the best music notation software out there with the best sound libraries?

Just as the question stated, I'm looking for a music notation software that has the best possible sound libraries with it. I have had started with Sibelius in the past, and then migrated to Finale which, in my opinion, had a bit better sound libraries. I am noticing the lack of "real" sound though, and it is very evident in the scores that I've written. So, I'm looking for the best notation software out there that has the best sound libraries, relatively speaking.

Now, I know that you might mention VSTs, and dedicated software such as Cubase and Magix Music Maker, etc., but these require MIDI and I don't have the money nor the space for that matter to buy one, especially in the current hyperinflation that my country is suffering. A mere BORG MIDI would set be back a whopping 3500$ which is around 3 years worth of salary with the current black market exchange rate (yes it's that bad in my country). So, sticking to software only is what I can pretty much afford. 

I do know Musescore has a good reputation, and it is free, but I'm not sure about its sound libraries. I've never really tested them. Can you guys give me an input on that too? Feel free to compare it to other software that are not free as well, I don't mind.