I have been researching this, mostly on Amazon, since we tossed our plastic triangle head a few weeks ago because the non replaceable bristles were falling off. Right now I'm using just the hose, duct taped to my pole, with the pole tip behind the hose so only the plastic hose contacts the vinyl surface. It's tedious like pressure washing where you only clean a narrow strip in every pass and spend a lot of energy. I am wary of heads with replaceable brushes because I'm seeing people complain that they fall off. It would be nice to have some wheels to roll, like some rubbery wheels, so it takes less human energy to move it around. I'm dealing with DE and "dust" that blew out of our return after we cleaned and reassembled our DE filter. It's sterile but inaesthetic down there. Haven't decided on anything yet. May 2024 edit: We bought a Dolphin Premier by Maytronics last year. Such a relief, he does a great job!