As of recently, higher volume, each workout is different, 4xDay in the gym, and always making sure the load on certain exercises makes me really work for each rep. Feel pretty good on it as of now, the high volume, but less days in the gym is the change I needed.
Before I started the MTNDG 4 Day Split (above)....I was stuck on lower volume, more days in the gym, and testing my strength with heavy ass load for me the first 3 workouts on the split, then detailing it the last 3 days of the split. Never was in the gym for a long a time on that 6 Day split.
I think sling shotting back and forth from higher volume workouts to lower volume workouts can and will work for most, just need to give it a try. The key is still progress, when that hits a wall, find another way to progress!