I compared McDonald's Big Arch and Big Mac burgers. The Big Arch put the chain's signature burger to shame.

I compared McDonald's Big Arch and Big Mac burgers. I preferred the newer burger.

Erin McDowell/Business Insider

• I tried McDonald's new Big Arch burger and compared it to the iconic Big Mac.
• I was shocked at how much bigger the Big Arch was for a slightly higher price.
• I just wish the Big Arch had some fresher ingredients to cut through the savory onions and cheese.

McDonald's just dropped a supersized new burger, and it's coming for the Big Mac.

The Big Arch...