For a solo developer or a team focused on latency-sensitive applications, Fly.io is the optimal choice. Its true multi-region deployments ensure low latency, which is essential for user-facing apps. You'll appreciate the scale-to-zero machines that help manage costs effectively when your app isn't in use. However, be prepared for a steeper learning curve and more complex billing based on usage.
If you’re part of a software team or a startup looking for efficient issue tracking and project management, Linear is the way to go. Its fast, keyboard-driven interface and well-crafted design can boost productivity significantly. Just keep in mind that it's not highly customizable, and its per-user pricing can become costly for larger organizations. If your needs require a more generic and flexible tool or an unlimited free plan for many users, this may not be the best fit.