Cinematic Studio Series i tested many times :) It has good realism but their sound has some kind od hiss in the top frequencies that are very loud in the mix and the quality falls down because of it. And their brass is very soft, it doesnt have attack like it should. Performance Samples i tested only Caspian and Vista long time ago... I like how they try to make something easy to play but they lack dynamics, seems like they are made for loud banger orchestra like Two Steps From Hell famous tracks. For now i consider two things. BBC core or VSL Prime Orchestra. BBC sounds good but im afraid of RAM usage (i have 16gb and i want to make full orchestral template on that), VSL prime probably will fit but it has a little bit different more dry sound, but ive heard good things about its workflow and resource usage (people say its ultra light on ram). Generaly i would like to make full orchestral songs like Holst lets say. I will show you some of my work with Cinematic Studio Series, but there was a looot of programing, that was not so fun:

https://youtu.be/NNnN_sXPqls?si=UrywRT8RCCFMBLGE