The small cut pieces of flats are for the nice little old ladies to make their New England Boiled dinner/pot roast,etc with potatoes,carrots,onions for Sunday dinner after church.
That is their market.
All practice is good,but I'd rather go to the local walmart,take a chance on a big ugly select 18 pounder and learn to cook it.
There are a bunch of different types of cut/grain on it and you learn how to make each better,each time you cook.
It really isn't about finding a piece of meat to make a one time dinner for the spouse.
Life will probably not be like that in the brisket world.
We all hope to make the perfect researched brisket our first time out.
I'm no expert,but those that are tell me its like growing big tomato,or squash gardens.
You grow enough,cook enough,eat enough-you get better.
Someone like Smokin',can take the brisket you hand him,and make a pretty good meal.Give him 30 packers and he'll make a bunch of pretty good meals.
Not perfect,but experience let's him and a Cookshack make pretty good meals out of whatever you hand him.
Not many folks can do that by stopping at the store,buying what is on hand,and cooking Sat night dinner.
Cook what they got,you can always throw in a couple leftover bakers and make brisket hash,if it doesn't turn out perfect.
The nice thing about a CS is even our bad cooks are pretty good eatin'.