It's really a trick question when you think about it.
Who else is on this team? What is the quality of the offensive line? Is there a running game to complement this QB's passing game?
Can this QB play his game thanks to a good defense or will he constantly be behind, throwing 30 passes in the 2nd half?
There are quarterbacks you want when the rest of the team is performing, not the most talented but the kind that doesn't make many mistakes. There is the type of quarterback that are high risk, high reward. They have the ability to score points with big plays but there is a higher risk of turnovers. There are seasoned veterans and exciting rookies.
If you are looking for a long term solution then you have to consider potential. If you have the rest of a great team and believe you can win now you may want someone who can be a great manager.
Dak is the choice, it would be a terrible waste to deprive the offense of vital cohesion, teamwork, familiarity and common experience.