They're both excellent, just wildly different. If you like the big lush scores for Wicked, Phantom, and Les Miz, go for Gatsby. If you like Floyd Collins, Violet, and Hadestown, I'd recommend The Outsiders. Gatsby wins for powerhouse vocals (and diction!) and scenery but The Outsiders is the one that will make you cry. Either way, these two are far and above everything else I've seen this season.