If you want to get bigger, you have to continue to up your doses when you plateau, plain and simple. If you are doing this as a recreational hobby, sure stick with 750mg test. If you are trying to get somewhere, needing to add size, it's your life, it's a goal with passion, you do what you gotta do and there's nothing that can stop you. If you have shitty genetics and are an ecto for example, you're going to be taking high doses eventually if you want to get the look you want. And it may take years. That's if you're willing to risk taking a higher dose knowing the possible sides. In addition to that you stay on year round.