Personally, in terms of backstory, I really enjoyed the visualisation of the Mind Stone and how it's power was showcased throughout the movies with characters such as Vision and Loki's scepter. Moreover, the stone being ripped from Vision's head was a truly traumatising moment for fans.

However, in terms of sheer power, I think the use of the Time Stone and its significance to the events of Infinity War was absolutely crucial, and was crafted to perfection. It also gave us some really cool sequence with Dr.Strange fighting Thanos on Titan, and the debate over the repercussions of the Time Heist in Endgame between The Ancient One and Bruce Banner which was amazing to witness on the big screen.

That being said, which stone's journey and backstory did you enjoy the most in the MCU, and was shown with great precision and care in the movies, according to you? Let me know your thoughts and views in the comments.
Which infinity stone in the MCU had the best journey and backstory to it and was represented flawlessly, according to you?