What type of control joint is best for my concrete project?
Cut joints are smaller and straighter, generally speaking. I personally prefer them for that reason. They do require a return visit, however, and therefore may cost more. One possible downside is the sharp edges that are left, which can chip away and degrade appearance depending on the use case. 

Tooled joints can be done at finishing time, and if done well don't degrade from the final appearance of the project. They are larger, though, and therefore can collect more debris. They do tend to be more durable due to the rounded corners. 

A quick search does return quite a bit of discussion on this.