A drink with a straw through the lid cannot be put down in a car. It cannot go in a bag with anything else. It cannot be carried up a flight of stairs by someone holding a phone. Every one of those is a normal thing a customer does, and a straw hole makes all of them a small gamble.
What the hinge solves
Black flip top lids carry a hinged tab that opens for drinking and closes again, which is what makes them suited to iced coffee and cold drinks that travel.
The closing part is the whole point. A tab that only opened would be no better than a hole. A tab that shuts means the cup goes into a bag, into a cup holder, into a delivery order, and arrives with the same amount of liquid in it that it left with.
One lid across three sizes
They fit 12, 16 and 20 oz, which is the entire drink ladder most dessert counters run. One line on the shelf covering three cups is worth more on a busy evening than the case price suggests, for the same reasons we set out in one lid for 8, 12 and 16 oz containers.
Watch the case counts on that, though. These come a thousand to a case, and whether that matches your cup cases depends on which cups you run. Work it out before the first order rather than after.
Where a straw still wins
Not every drink wants a sealed lid, and pretending otherwise would be selling you the wrong thing.
Layered drinks are the clearest case. If the presentation depends on the customer seeing the layers, a black lid across the top hides the part you were selling, and the straw is doing visual work as well as functional work. That logic runs through serving dirty soda in clear PET cups.
Anything with a topping sitting above the liquid line is also out. A flat flip top lid has no clearance, so whipped toppings and tall builds need a dome instead. Milkshakes generally fall on the straw side for both reasons at once.
The color is not neutral
Black is a decision, not a default. It reads as coffee-shop rather than ice-cream-shop, which is exactly right if you are running a coffee line alongside desserts and slightly odd if your counter is otherwise bright and pastel.
It does coordinate cleanly with black cups, black containers and black spoons for shops running a deliberately dark presentation, and it hides marks better than a pale lid on a drink that has been handled.
Deciding it in one question
Ask what proportion of your cold drinks leave the building rather than being consumed at a table. If it is most of them, the flip top is the default and the straw is the exception. If it is few of them, you are paying for a hinge nobody uses.
Every lid profile, from flat and dome through to the flip tops, sits together in the lids and domes range.