I've read the posts about the Chaco Redrock. I was skeptical at first, myself. A few years ago, I TRIED to wear one of Chaco's sandals, and thought the arch support was "too much." So, I went with another brand. But, with PROPER foot analysis, (finally), it was determined that I not only had an average arch, but on the high-end of average. And all these years I thought I had "flat feet."
So, I tried a pair of the Chaco Redrocks on. NEVER felt so much comfort. The arch support goes across the entire arch. I never knew how much comfort I was missing.
About the Redrock's use. I bought them as a casual shoe, that can be used for "light hiking" Here is what is said above about this shoe: "...Chaco designed the Redrock as an athletic sneaker, offering the outdoor enthusiast a rugged high performance shoe with a comfortable fit." Obviously, it was NEVER intended for trail running, hard use, and particularly not for backpacking.
If those are your desired uses, you need to look at other options. But, if you are looking for a cool, comfortable, and stylish shoe for kicking around town; you cannot beat the Redrock.
Oh, and I now also swear by Superfeet "Orange" insoles for all my athletic shoes.