The [VSL Dimension Strings II] instruments are for projects where you only want to trigger Dimension Strings II and not Dimension Strings I. So they are not redundant - especially for users that only have Dimension Strings II, but not Dimension Strings I.
>> the studio version is not working nicely with Sibelius, but that's no problem for me
=> Studio Dimension Strings are working fine with Sibelius here. If you want us to take a look into your problem, please send a detailed description and screenshots to support@vsl.co.at.
>> Another thing,my pppp pizzicato's are almost as loud as ff (f.e. in the solo violin)
=> Maybe you didn't load the correct preset. To be better able to look into this, please send the following screenshots to support@vsl.co.at.
- Sibelius "Add or Remove Instruments" menu
- Sibelius mixer
- Sibelius Playback Devices menu
- Sibelius Manual Sound Sets page of all loaded devices
- Vienna Ensemble showing one of the instruments that doesn't work correctly
>> Question : is it possible for me to make changes in the way the samples volume rects to different dynamic articulations ?
=> With Vienna Instruments Pro you can extend the dynamic range of single slots under Advanced/Edit/Velocity Curve.
https://www.vsl.co.at/manuals/vienna-instruments-pro/slot-rack#slot-editor-edit
Best regards,
Andi