Depends on my footwork and preparation... if I am well placed, I do not see why I wouldn‘t hit big. It would be stupid not to do so, actually. The difference is that I might spend more energy getting top spin than pace if I do not have a good occasion, but I won‘t slow down on the hitting. I would be careful if I wasn‘t perfectly balanced or if I was forced to lunge...
Usually, you always hit as good a shot as your body allows. If you get caught poorly placed, you can‘t hit as big a shot as normally. If you are well placed, always go for a good cut. At least 80 percent or more.