Well, I haven't heard of Hefty... Then again, I got out of the offroading community when I moved to NM in 2010. And even before then, I wasn't all that active for the past few years. I know that the quality of Shrock is amazing. And fyi, I bought my sliders as bare steel and primed/painted them with a truck bed liner. I've touched them up once, but the color I bought was the same grey as the plastic on the truck, so it looks extra nice.
Also forgot to mention I've got 33x10.5's on my offbrand D-Ring steel 15" wheels. They stick to anything and everything.