I'd prefer open sets, honestly. I like being able to pick something that I know I can drive rather than argue with a setup that's too loose or too tight. Plus, since open sets started on Sundays, I'm learning about how to tweak setups to my personal liking. Kind of a stepping stone to building my own setups and learning what each adjustment does to the car.
My 2cents on fixed sets is that anybody can drive them. You may need to adjust your steering ratio to suit your driving style. The thing I tend to see the most on fixed sets is trying to over drive them
