I've been a Garritan + Sibelius user for a good while, the numpad got me really used to Sibelius, and the PO4 and 5 being mapped since Sib 8 really sealed the deal for me. In the past i used musescore 3, which was good, but had its flaws. With Wallanders NPPE making a bridge between big libraries and notation programs, i felt we were achieving a new peak in playback fidelity.

However, the prices really were a turn down for me. Individual licenses + Notation software license + Libraries licenses + NP licenses and other issues such as delay on playback, really took me away.
Just today after some migration i tested a MusicXML file in MuseScore Studio 4. I tried it before, i know they took making optimization to the heart. But i was honestly amazed with load times of their libraries, and the sound.

I know they use a minimized version of the libraries they offer. But the fidelity of ornaments with the playback... Sweet jesus. I only played around with Spitfire Chamber Strings and CinePiano, having to do some manual mapping its a pain in the ass, but not needing to open 3 extra windows for each time i want to modify something, and playback being accurate and on time, man, if they ever implement the numpad in MS, i may change my main notation software. Have you guys experienced with MS and MusicHub sound libraries?