Mix of both. Main movements I do top set and back off, others get more volume.
One of the big reasons I've made so much progress with bodybuilding is I don't overthink this stuff. You post a lot of threads, ask a lot of questions, and if you look at my post history you'll see I've very rarely done that even when I started out here. Getting huge and / or shredded is simple - pick your course of action, takes notes on how it works out, keep refining those methods, and over time you'll master your body and be able to do anything you want. Don't waste time looking for a magic bullet, there isn't one.