Have had these 4-5 weeks and have thoroughly enjoyed them   No sticking means no sticking!  Do let them warm on med -med/high heat at instructions state.  When these heat up they are a thorough heat, no hot spots, no rocking.  I have not used a ‘high’ heat setting at all for any meat.  Would definitely buy again-but don’t think I’ll ever have to.  I want to add I have several Ninja products and I am pleased with them all.  Customer Service  is outstanding.