@ArchAngel96 wrote 2 mains with history. Piyush sir has good command over recent trends in optional. See if you find him on unacademy( probably! He doesn't work in GS Score anymore). You can access previous topper's answer copies from gs score's website for more insights.
@Archand His notes are crisp where benefits,drawbacks are written in phrases. If you don't understand them by simply reading them, classes would help because he elaborates them (I'm not a topper )
