You can get the best strength gains by performing heavy sets of 1 - 5 reps which will activate the greatest number of muscle fibers available. (fitnessandpower.com)
You can add variety by juggling with compound and isolation exercises and light and heavy sets first and second. (verywellfit.com)
For me, the high rep sets didn't have much of an impact on the follow on heavy sets. (trainingscience.net)