Thanks a lot to all for wonderful inputs. These details very helpful to me understand the differences.
JoNorvelleWalker, here is the link for Falk spec 18/8 stainless:
https://www.falkcoppercookware.com/signature/28cm-copper-frying-pan/2505S1810
Dr. Teeth, thank you. Most my cooking consist of frying moderately checking breast or sea food, then add vegetable, simmer for 10-12 minute, then finish cooking with sauce. Rarely, cook red meat. Also make a lot chocolates sauce and desserts on top stove, pasta and rice as well. I cook all around the world food recipe, and I have most of ATK books and many other books.
My Whirlpool stove is really old, 25 years, few flat plates don't heat even coverage, they need to replaced, but there is no replacement at moment because old stove, i can afford buy new as only solution but i felt little lazy about it at moment. So it is important to use pan has good heat even.
I have All-Clad D3 and D5, and many expensive enameled Dutch ovens. Dutch ovens not practical to me because heavy and require long heat and powerful flame, but All-Cald D5 doing incredible job. But I'm looking cookware more fast heating and use little energy as well, to make cooking more easy. I will buy one copper pan and see how will perform in my stove.
