I think both are good to have. The challenge will get you the applicants whose resume and CV might not reveal how talented they are. The traditional route is

I think both are good to have. The challenge will get you the applicants whose resume and CV might not reveal how talented they are. The traditional route is great for people who are already well established who want to drop off a resume through a friend and don't have much time for a long interview test process. I suppose the tests might not be that hard if you really are experienced, but they are a huge barrier when you are low on time and energy.