We needed to replace the ones in the house we bought 16+ years ago and I went with the Werner one. Tread width has not been an issue but I'd be curious about the locking mechanism because there is a weird pressure point at one specific angle, while standing in the lower section and leaning into the ladder, when the joint between that section and the next gives and the bottom section moves up off the ground. It's disconcerting when it happens, especially if you have a load in your arms and are unable to grab the railing. No accidents yet, thank God, and once you remember it you also remember to brace yourself for it so you can avoid it, but it would be nice not to have that issue. Not sure it's worth twice the price, but I'd probably feel differently if one of us fell.
Speaking of which, thank God also that the statute of limitations has long ago run for the contractor to make a claim against us. Unrelated to the stairway design, he managed to fall out of the attic and onto his back while doing the job and he had to have his cousin come help him finish it because he was injured in the process. He was self-employed and waived worker's comp for himself, but he told me he was insured when I hired him so I just reminded him of that fact afterwards and never heard from him again.
