I have been wondering about this the past couple days. I am coming off a nice little 3 week break, and am in the process of getting my ass whipped in the gym this week. I have only been at it 9-10 months and am still small. I wonder if I don't put on the most weight i possibly can and only get 6 reps straining, and instead drop the weight down 10-15lbs and get a good 10-11 clean reps, is it just as good? If I'm looking to build up the strength and size, do i have to lift to the point of failure on every lift? Does lifting lower weight and getting your sets done do the same job? Does it even matter, or as long as you're in the gym lifting consistently, thats the most important thing?