Soundfont test - Orch.Strings - slow
Tchaikovsky Serenade for Strings Op.48 III Elegy opening
I found it comparable to the expensive strings at Vienna Symphonic Library
The sound here is almost as round (they cheated and took it at a much slower tempo.)
It would be nicer if the sound could be more sostenuto with the tones blending into one another as in the VSL sample. VSL also offers strings con sordini for when the passage returns later.
I think MuseScore came close here. I can't justify the expense and disk space usage at VSL with this string example. Nice job.