One of the best is 'Final Crisis'. In this story, Darkseid's plan to reshape reality is opposed by Superman. It shows Superman's unwavering will against Darkseid's tyranny. Another great one is 'Superman: The Darkseid War'. It features an epic battle between them with high - stakes and amazing power displays.
Thanos obtained the stones by outsmarting and overpowering many opponents. His determination and resources helped him in this quest. He faced many challenges but ultimately succeeded through sheer force and cunning.