Since nobody else is really jumping out to help here, I'll throw in my pennies on flat vs. a cat tarp. I always have a bivy and a tarp on me. I sleep out ~60 nights a year. Of those nights I'll typically only set up the tarp 3-5 times and that's to cover me from rain. So from my perspective, I don't need a tarp that's uber flexible in pitching options, as I just need something with decent coverage and in an a-frame configuration since that works best with my bivies. I choose cat cuts because they're simple to set up and take minimal tweaking to pitch tight. I also always sleep by myself under it though so if you're sharing the space, a bigger flat tarp may be a good option for you.
My tarps are like rain gear for me. Rarely used so my requirements are pretty sparse; be simple, light, and keep me dry.