I find wahlburgers overrated. The patty isn't as juicy as it can be for the price that is being paid. As well, they can definitely find better bun for the burger. I'm not saying Wahlburgers is bad... just that it's okay... I definitely had better burgers for the same price.
However, there isn't that many choices for food in the transborder airside either...
** warning : there's usually a wait of 10 minutes for the burger... so if it is busy, the wait can be longer!! **