We replaced over 15 pots and pans after getting an induction range.
All Clad are the most expensive and by far the best, standing up to the super high heat and not warping. We bought only two at deep discount, otherwise I'd get nosebleed at the price.
Calphalon are very good, but a full notch below the AC, which they clearly are modeled after. We got a full set on sale at Macy's plus a coupon and another discount because it was the last set. Stupid cheap, but the most important thing is they work well. My fault that one pan warped slightly from the highest setting with not enough food in it.
De Buyer are my favorites. I think they're the "Mineral" line but don't know what that means, exactly. Got them at discount at Tuesday Morning and once seasoned, they are relatively non-stick. Utilitarian in the best ways possible.
Lodge cast iron. One skillet, heats great, even with seasoning things still stick sometimes. Heavy and not a chance of warping.
Various stock pots 8-20 qts. from ebay, and restaurant stores. Figured best price quality (thickness and inclusion of a lid) ratio and pulled the trigger.
Hope this helps.