I tried double cheeseburgers from 5 fast-food chains and the cheapest burger blew me away

This sandwich was definitely worth the price. It was less than what I usually pay for my morning coffee.

It comes with one slice of cheese.

Right away, I tasted the thick beef patties. The burger had traveled a little more than 15 minutes from my local Burger King to my apartment, but the meat was still juicy and the cheese nicely melted.

The pickle slices were thick and crunchy, and I enjoyed the sesame-seed bun, which added a nice textural element. But I thought there was just a little too much ketchup, which will likely vary depending on who's making your burger that day.

It was also a little heavy for my liking. It filled me up a little more than I had anticipated before jumping into the rest of the taste test. Still, for a burger that costs just over $2, that might be more of an asset than a hindrance if you want a filling, inexpensive lunch.

It was about the same price as the burgers from McDonald's and Burger King.

The toppings looked a little stingy, and they were clustered in the middle of the sandwich. I would have liked to see them more spread out.

But I had to get a few bites in to reach the toppings in the center.

The toppings themselves were amazing. I thought the pickles were the most flavorful out of the burgers I tried, and I liked the use of an onion ring rather than diced onion. Though I would have liked just a little more.

It was slightly more expensive than Burger King's version but had more toppings. It came with an extra slice of American cheese plus chopped onions, and it was still affordable.

I was interested to see if the added toppings would amp up the flavor.

The bun held everything together and was a good size, but it was a little too soft and didn't have a lot of flavor on its own. But I enjoyed the amount of condiments and didn't find them overpowering.

The chopped onions added a lot of flavor, and the burger patties were juicy despite being thinner than the Burger King ones. I liked the added cheese but didn't think it was totally necessary.

It cost me $9.49 for a double cheeseburger. I was able to customize my toppings, but I went with pickles, onions, and Shack sauce.

The burger patties were perfectly crispy on the outside and covered in gooey melted cheese. The pickles also looked large and homemade. It was even heavy to pick up.

The cheese was thick and perfectly melted.

The burger was huge, which was both an asset and a hindrance. I struggled to get through more than a few bites.

However, despite being the most expensive burger, I definitely thought it was worth the price. The burger patties were much thicker than the other burgers I tried, and the toppings definitely took it over the edge in terms of flavor.

Overall, I was impressed — but stuffed.

White Castle sliders tend to be eaten in pairs, so I ordered two. Each burger cost me $2.09, so I ended up paying only $4.18 for a generous amount of food.

The burgers smelled strongly of onions and condiments the second I removed them from the bag.

The pickles were crunchy and flavorful. Though the burgers each had a bun sandwiched in the middle of the burger, it wasn't too bready — instead, it allowed the flavors to really come together while still being filling.

As the cheapest and smallest burgers, I was expecting them to be a little lackluster. However, I found that good things definitely come in small packages. The onions, condiments, and pickles were flavorful, but it was the beef that really sealed the win for White Castle.

The small-but-mighty burger was the most flavorful out of the ones I tried, easy to eat, and perfectly priced.