I guess that depends your hunting style. I hate rain gear. I would sooner set up a sill tarp and sit under it all day and glass, than try to cover ground when it’s raining. So I rarely actually wear my rain gear. I rarely even carry it. But if I do have to break it out, I want 100% waterproof. Nothing with “tiny little holes that breathe” so that the heat gets out, but the water can’t get in. I always kinda laughed at that concept. Notice how they don’t make boats like that? Ha ha.
For me, the other factor is dry time. Impermeable rain gear like Hell Hansen Impertech dries fast. Turn it inside out and it airs out quickly and easily. Breathable rain gear typically has an outer layer and a waterproof liner. By the way, I still sweat like hell in that stuff. But the outer layer absorbs water. Often times lots of it. It needs thoroughly dried every night, usually with a heat source. And worse yet it needs dried out on the inside AND the outside. Those are two dealbreakers for me.