An advantage to the factory Creed with factory ammo is that you end up with a range ready rifle with the right twist out of the starting gate and no need for the extra work and additional expense of a custom.
There's no brass to fire-form and you're at the range the same day instead of a year later at about 1/3 cost and you're done.
Either one is fine for what you want to do, but if the ultimate goal is more range time, with the Creed all the design work, engineering and testing is already done...for practicality it's not a fair comparison.
