Any comments regarding my doubts and my conclusions regarding this library (described in the previous paragraph) would be very welcome. If anyone else has any better library suggestions (according to my needs described above) it would also be welcome.
Every library has its own weaknesses and strengths.
Most important thing is follow your ears, in what you like.
One thing to think about is: if you want the instruments as ensemble patches only or as indiviual sections. I have added a comment on each library below regarding the strings (normally it should also hold up for brass/woodwind).
As for good allround packages regarding orchestral compositions here are some to consider:
Sychronized Special Edition (VSL)
High quality. Lots of content to explore.
It needs a dongle. In contrast to all the others this one can be sold. So if you ever want to get rid of it, you get at least part of the money back.
As far as I know VSL allows upgrading. Thus you can start with the most basic volumes 1 + 2 (or only even Vol 1) and see if you like it before you get all the rest.
Strings available as different sections (Violins, Violas, Celli, Basses).
In case you like the sound going with this product is absolutely fine.
Hollywood Orchestra Gold (East West)
Minimum get Gold version here (the diamond is huge in disk space).
This has just everything you need.
Compared to all others Hollywood Orchestra has the most content for the money.
Regardless of its age, still many many come back to this. Especially for strings/brass.
Strings available as different sections (Violins, Violas, Celli, Basses).
Berlin Orchestra Inspire 1 (Orchestral Tools)
Has mostly ensemble patches, but also some solo instruments like Flute, Horn.
Strings not as individual sections (Violins, Violas, Celli, Basses) but as an ensemble patch.
A very nice allround package.
Orchestral Essentials 1 + 2 (ProjectSAM)
Vol 1 contains the most basic things.
Strings not as individual sections (Violins, Violas, Celli, Basses) but as an ensemble patch.
Vol 2 contains additional patches like Flute, Horn...
Albion One (Spitfire)
Mostly has ensemble patches. Makes it difficult to play melodies when suddenly different instruments kick in/leave. I see this one often recommended, but as a single library personally I would miss something. Is missing almost the complete typical orchestral percussion (okay I can fully understand, Spitfire has the Joby Burgess Percussion product for this purpose).
Strings not as individual sections (Violins, Violas, Celli, Basses) but as an ensemble patch.
Palette Symphonic Sketchpad (Redroom Audio)
Rather new libary, can't comment on this one yet. But looks pretty nice.
Strings not as individual sections (Violins, Violas, Celli, Basses) but as an ensemble patch.