Im with danielson, long rest will allow you to maximally tax CNS and work on muscle recruitment. If you take shorter rests you will intoduce fatigue into the equation which will cause more hypertrophy. I personally incorporate both in the same workout. I choose a weight that I can just do 5 reps with(usually about 905 1rm) and do 2 sets with lots of rest between to stimulate CNS. After that I drop weight to about 80% 1rm and shoot for sets of five, I stop at 5 even if I can do more, however I only rest 30 seconds between sets and I do as many sets as I can until I cant get 5 reps which is usually between 2-5 sets.