Control+Shift+H or you can find the link to it in the history menu in the main Firefox menu. Or at the bottom of the history menu from the history button if you add it to your toolbar. Or in the Library section if you use that menu/button.
The sidebar is a cut down overview.
Same for bookmarks, the full bookmark screen has more depth and features than the sidebar.
The problem with brands is you have to know the brand to know if you’re paying for quality or advertising, or both. There are plenty of big brand name products that are not worth the price, but there are plenty that where the price premium is reflected in the quality of the product.
Unfortunately everything has to be on a case by case basis. I generally favour generics but there are a few branded products that I will go out of my way to buy.
A treat example is Pyrex. It used to be a mark of quality due to the material they used to make their plates bowls etc. Then I got sold to some big conglomerate and they switched to cheaper less heat proof material. Now Pyrex is just a shitty legacy name slapped on crap, but at a premium price.