I don't know...if the next exam is too easy then this exam will have a huge effect in differentiating between us an determining our SS. So if you fully owned this exam and got full marks then it would be better to get an easy exam next time. It's like going in 40 points ahead at half time and all you need to do is hold onto the lead. So a good performance on an exam where everyone performs good and an awesome performance on an exam where everyone does not perform as well would be enough. But if you aren't satisfied with your performance in the sense that you believe that some better time-management or doing a couple of things right here and there could have significantly boosted your mark; then getting another hard exam next time may be just what you need to get that SS higher. In any case, I wouldn't bet on an easy exam for U4, if you look at subjects like Accounting that were in the 2nd year of the study design last year both their midyear and endyears were considered fairly difficult.