I own 2 other Anolon pans and one small sauce pot and I’m pleased with the product performance, however, with these 2 new fry pans (as instructed in the enclosed brochure) will not use any type of cooking spray. I am however experiencing some significant sticking when I have attempted to make omelettes & frittatas. I just don’t know if I should use a thin coat of olive oil or butter. The brochure doesn’t really give me the information I need, and I do not want to compromise the integrity of these pans.