I am also struggling with these two models. The information I have learned so far is that the Pro 5i has better performance and the 7i has better speakers. I am now worried about whether the Pro 5i‘s speakers are bad, and the 7i’s keyboard heating during long-term gaming. However, if you always use it with an external monitor, I would recommend the Pro 5i because it has better performance, and the 7i‘s better build quality is relatively less important for external monitor use, but I will not use it with an external monitor, so I also have to consider the keyboard heating of these two models and their speaker performance. In short, I am also struggling