Porro prisms are a great option for bird watching and hunting in less budget. It helps you to get a wider field of view with great image quality. As per experts. If you are planning to explore the beauty in forests or for nearer objects porro prism is a better option for you.
If you are planning for a longer range of wildlife or you are an astronomy lover then you have a requirement of better magnification then you should choose a roof prism binocular. Both of the prisms have their own quality.
One mantra of all the problems that You have to just find out your needs, your preference after that you can decide which one is better for you. So select the best binocular which comes under your budget, needs, and preferences. I hope you got a better idea of porro prism vs roof prism.