To get the best out of any routine IMO you must prolong muscle failure as long as you can the sooner you fail the sooner your cycle will end. don’t get cared away with adding 5- 10kg every time you train, if you barely managed six reps with the 30s on shoulder press, what are you going to do next week, slap on another 5kg aside I don’t think so. Hitting muscle failure means no thither growth because you cannot give the body the new stimulus it needs for growth over the coming weeks, don’t get me wrong
Training hard, or harder than hard is all that will do in terms of muscle growth, it must be done. yust just not to the edg of death every time.

ps im a manager of a muscle shop in the uk and i can safly say CELL TECH SUKS!!