The Synchron Bösendofer 280VC is one of the those sampled libraries that I'll never regret buying and continues to make its way into the rotation of sampled libraries that I play on a regular basis. It definitely requires (for me) more editing to get a controllable sound out of it, but that is mitigated by VSL's superlative software. Here is a review I made when the 280VC originally came out. This is before the the VSL software updates e.g., velocity curve editor, etc., so it doesn't reflect the best sound that I've been able to get out of it, but it still highlights the uniquenesses of this sampled library that make is special.
https://youtu.be/kI4HQHtF5zQ
God Bless,
David