I tried a Pierre Signatures Angus Cheeseburger from Costco.

The burger tasted like a regular cheeseburger, maybe a bit fattier. I also found it salty, so after eating part of one with the cheese, I decided to try one without cheese. I tried a new burger and microwaved it without the cheese in it. The burger without the cheese wasn't as salty and tasted better to me.

The bun was also good and wasn't soft and mushy or too hard. However, after eating the majority of the burger, I let it sit out for a few minutes while I went to do something else, and when I came back to eat the rest, the bread had become a little rigid.

By the way, don't get your hopes up for microwavable lettuce. Unlike the front of the box, the actual burger doesn't come with any kind of lettuce. 😛