I had lost hope with my electric cooking plates. The white circles where completely hidden under a layer of diamond-grade burn residue that no amount of scrubbing with chemicals could even begin to remove. I found this 3€ scrapping tool and it’s amazing !!! Sorry, but I don’t have the before picture, believe me after 6 years of usage, it was bad.
My most used, first and second favorite cast iron skillets are a no-brand $5 rusty garage sale find. A strip and reseason and these things are the best.
My third favorite is the $50 Lodge we got as a wedding gift.