Surprisingly good, but also surprisingly expensive.
I had the Mexican Rider, and while I'm not sure how down I am with paying $13 +tax and tip for a breakfast, it was quite good. Throw that in with a $6 Orange Juice, my wifes accompanying breakfast and coffee, and then tax and tip... Next thing we knew we were staring at a $50 bill which is more than I typically like for breakfast that didn't involve alcoholic drinks.
Something that seems really weird is how you can only order Breakfast Tacos during weekdays. I'd understand if they weren't a special price on a weekend, but to not offer them at all seems weird.
Aside from that, the service was perfectly adequate, so despite a bit of sticker shock on the bill, it was all in all "A-OK".