It depends on who you already have in your team. Having a few members who can solve hard problems on their own is great, and they usually have to be silent and

It depends on who you already have in your team. Having a few members who can solve hard problems on their own is great, and they usually have to be silent and focused while doing it. You also need people who are good at participating and helping and explaining their thought process. A team that has only one type isn't going to be the most effective team.