I do batch with my current setup, but if/when I get around to building a 10g brew system I will probably move to fly. For now, my mash tun sets up on a table in my garage. The kettle is on the floor. To do fly means getting a vessel elevated over my mash tun or pumping liquid. I know I am losing some efficiency with the way I am sparging, but that doesn't really trouble me. What does trouble me is the idea that I might somehow be not getting the clearest wort possible into my kettle, even though I vorlauf.