Shaqima is not difficult to do. You don't need any professional equipment, you can do it at home, just fry it. So there is no classic brand.
If you want to find the classic taste of childhood, you can only go to the old pastry shop. These stores have been operating for many years, most of which are century-old stores. The cakes in the noodles retain the original technology and formula. You can try it in major old shops.
Here are some related lists for reference only. (Not limited to the following list, just my thoughts now)
Daoxiang village
Bisynthesis
Guanshengyuan
Wufangzhai