For me personally I like to cycle through a couple of months training for strength, then a couple of months on higher rep/lower weights, using dropsets/trisets/supsersets.
I find going REALLY heavy to start with, aiming for 6-10 reps and focusing correct form, and increasing the weight over time is great to build up the initial strength, and for getting a good mind-muscle connection.
Then the couple of months you spend completely burning out muscle groups with higher reps (12-15) and using dropsets and supersets works well to build and shape the muscle and pack on size.
The reason I think it works better to build your strength up first is so you can go heavier and harder on the higher rep stuff
just my opinion though, it works for me.
Mixing it up keeps your body guessing and keeps it interesting, so I think as long as you vary your training style from time to time you can't really go wrong