I would like to know what the general consensus is when it comes to these training methods in terms of real world muscle gains.. which is best? and why?

*going all out until failure on each set, blasting your muscles leaving you sore for a good few days. You really do feel you have had a work out the next day.
*Or taking the approach where the focus is on volume with out going to absolute failure and possibly being able to hit the muscle group again the same week, thus increasing work done by a considerable amount as opposed to the former

thanks erioders
snap