Funny coincidence: I had the Archer 1/2 wave first, too. It was adequate, but that .64 did circles around it. There were a few other CB antennas - including a Starduster, an Astro-Plane and an Archer 1/4 wave - in the neighborhood. None performed anywhere near as well, and the base of mine was only about 12' off of the ground.
When I got the .64, I went out and bought the stainless steel version of every bolt, nut, washer and screw the antenna's build called for and I had to install. All was good until my .64 got hit by lightning.