Use the right tool for the job, as others have said.
6-point are generally more common, so have tons of 6-points, in every size. 12 points tend to be more rare, so I buy them as I need them, which is basically never because I wrench on 40 year old German cars.
They say 12 points, using a 12 point socket is able to be torqued higher, like for racing applications....but...meh. 6 point have been around plenty long, and take plenty of torque...