In terms of my own sample library experience, I went from GPO to EWQLSO to VSL SE to VSL Cube. Of those libraries, I probably found EWQLSO to be the most frustrating. While it had better sound than GPO, the baked-in reverb was a real problem (Platinum with the three mic positions was a bit better than Gold in that regard). The incomplete range of the strings I found to be a problem. I also found that some styles of writing did not work with their strings - writing to the samples was an issue. I have not had those issues with VSL - even VSL SE. As for Play, I did not care for it at all (I had EWQLSO Gold in Kontakt, Platinum in Play).
I will echo what others have said: you do not want to even try to run their new Hollywood series on anything other than a new high-end computer. VSL SE, OTOH, will fit quite nicely on a very mid-range computer. As for sound, IMO, VSL SE is far superior to the older EWQLSO.
However, the key is to find what works for you.
As Daddy-O suggested, do check out that other forum.