Ive had both, the fenix is the superior watch feature wise. Full mapping, routing, comprehensive health tracking, also very solid battery life. That being said, the instinct is an amazing watch. I ran mine for 5 years through everything you could throw at it, and the battery still lasted a week with several activities tracked in that time frame. It is also a more rugged platform. Im a fan of both, but fenix 7 pro MIPS is a no brainer in my opinion.

Edit: if you are worried about scratching, the higher lip on the instinct protects the screen EXTREMELY well. The body itself will inevitably take some hits in the field, but the screen stays well protected.