For what it's worth, I purchased a Max Burton 6400 off Amazon a few months ago for around $125. My daughter and I decided to make maple syrup this year, so we needed a cooktop we could use outside to boil down the sap. We boiled off roughly 60 gallons of sap over the course of two weeks. The Max Burton ran 16 hours straight on high several times. I'm not sure how well it will hold up long term, but after a couple hundred hours of run time, it still works perfectly.
I wouldn't hesitate to use your good All Clad cookware, unless you really need teflon. They will perform far better than the included cookware. I have a set of Viking 7-ply pans, and they have very even heat thanks to the layers of aluminum.