Back in the day I thought those new flexible rods were just a gimmick
My old boss in Cleveland swore by the solid steel rods, said anything else was junk. I tried a set of those polypropylene ones on a tricky offset flue about five years ago, expecting them to snap. They actually handled the bends way better and saved me a ton of time on that job. Now I keep a full set in the truck, they're my go-to for most residential stuff. Anyone else make the switch and find it changed how you tackle certain chimneys?