Unfortunately, Thats a loaded question that knowone can answer. Its just something to note when comparing setups. If it was me I would pick a 61x reduction nozzle for 760ccs or less in a freeride application. That being said, they will both work awesome once you get the boat to someone that actually knows how to tune a pump well. Tuning is my strongest weakness. I can understand why things work, I just cant "feel" what needs to change. So take that into account when you weight my advise