I tend to lift in the 5 rep range for compounds and the 8-10 rep range on isolates. I go strictly for progression in weight with good form. I've trained for the pump, but the fascia stretching gains made that way are very fleeting, vanishing like 2 months later. I am very into power lifting, and have trained strict Westside, but the 1 rep maxes help me get a lot stronger, but hypertrophy is very little and my body gets very soft. I think the cortisol from that kind of training doesn't help. Also, muscle can adapt in 3 usual ways: 1)change fiber types (like more slow twitch with marathons, or more fast twitch with power lifting), 2)fascia stretching (with high rep pump oriented training), and 3) increases in muscle size by fusing satellite cells to the muscle (by IGF). Number 3 is the only true hypertrophy. If getting stronger were sufficient to be huge, then power lifters who held the records would also have the sexiest bodies -- they don't. In fact they look awful, and it's not just the thick layer of fat. Even the light weight classes which are pretty lean look terrible compared to a low-level local bodybuilder. It simply is possible to get very strong by changing fiber types and improving the form and efficiency of your lift, but not getting much hypertrophy or balanced development at all. That is probably not what most of us want.
I just lift in the 5-6 rep range for compounds. Its possible to get very strong with this, but you will always be a second-rate power lifter. It's also possible to get a fairly big and symmetric, but you will always be second-rate next to a bodybuilder hitting things from different angles, utilizing cables, free weights and machines. So I just keep it in the middle. It makes me happy.
But if you want to compete as a power lifter and do well, you have to go all the way and give up the "look". If you want to be a competitive bodybuilder, you can't worry about breaking your state squat records. If you just want to work out, be happy, and enjoy a functional body, than stay in the middle
The Middle Way, bro . . .