There is no universally "best" stack — only stacks that fit a specific product, team, and timeline.
When to use Next.js
Content-heavy sites, marketplaces, and any product that lives or dies by SEO. Server rendering, edge caching, and image optimization are built in.
When to use plain React (SPA)
Internal tools, admin dashboards, and authenticated apps where SEO is irrelevant and interactivity dominates.
When to use Flutter
When you need one codebase running natively on iOS and Android with pixel-perfect design control. Great for consumer apps with heavy custom UI.
The real question
Match the stack to the team you can hire. A "better" stack that no one on your team knows is a slower stack in practice.
