I went with a copper j-pole for 3 reasons. Weighs 1 pound, it has next to no wind resistance, and cost. With my cobbled together setup consisting of thin 1 1/4” aluminum electrical conduit with some wood slats to help anchor it from swaying, it made the most sense. There will always be something better. There will always be something worse. For me it works well and does what i ask of it. No complaints. I also have another j-pole that i have 50 feet up for my small solar powered GMRS repeater. I set it up for our (semi rural) neighborhood to use, but it actually covers about 10 miles. Again, no complaints. People can crap on them all they want, but a copper j-pole wont snap in half or splinter like fiberglass does. Oh, and i clear coated mine, so don’t yell at me about oxidation.
J-pole base station antenna at about 30 feet. (Don’t mind my cat. He loves it up there).
J-pole repeater antenna at 50 feet on 30’ flagpole + 20’ aluminum electrical conduit.