The best one is the one that enables a team of developers to flow and get their work done. It will depend on what the company builds and for what market. You have given no indication of what your company does, the team size, etc. so the best answer is really the useless: It Depends.
If you are building command and control software for an energy power plant, or medical software, you probably have a lot of regulatory requirements to meet so it may require a more intensive PM tool for tracking of work, sign-offs, etc.
If you are building time tracking software for managing a staff of retail employees, precision and regulations are very different than a power plant.
My suggestion is the most minimalist set of features to help the team stay organized and get things done. All the extra features packed in claiming to make things easier never really do. There is no silver bullet to make projects go better than a team that gels together well and a PM tool, or any software, isn't going to be the key thing that makes that happen.
If you are building command and control software for an energy power plant, or medical software, you probably have a lot of regulatory requirements to meet so it may require a more intensive PM tool for tracking of work, sign-offs, etc.
If you are building time tracking software for managing a staff of retail employees, precision and regulations are very different than a power plant.
My suggestion is the most minimalist set of features to help the team stay organized and get things done. All the extra features packed in claiming to make things easier never really do. There is no silver bullet to make projects go better than a team that gels together well and a PM tool, or any software, isn't going to be the key thing that makes that happen.