have the same question if that refers to Output Rev and you are only looking for reversed stuff ?
I have no clue for that cause I dont use, otherwise the market for
beautiful - neutral ambiance atmospheres
is nearly endless and I wonder if there is already a list somewhere in the forum (would wonder if not).
Apart from the already mentioned it depends if you are looking for an "all included" version like Omnisphere or more for something special and "exclusive". For the second I would add Triple Spiral Audio (jaap was to shy to mention it seems
), the stuff from Frozen Plain (now available without kontakt as a new vst version and all libraries to be updated for that engine) and of course the really beautiful and relaxed stuff from SAS where something new is coming these days too:
https://vi-control.net/community/threads/anouncing-metamorpha-allmosphere-playthrough-added.86268/
I think I could go on the whole day but as this is so crowded might help if you could go a little more specific (for example does this include the BOC - Boards of Canada - stuff which would be enough to fill a thread).
I had really fun and found lots of treasures with the new vst rack version from Reason. Apart from the already included hundreds (if not thousands...) of presets I yesterdy bought this:
(broken link removed)
which has so much great athmospheric ambient stuff (even if years old mostly) and I really love the combinator idea from reason where you have sequencers, effects evrything included for your tweaking.