It's not bad, but I'd like to try it again without the onions. Usually I order hamburgers without onions, but the ones used here (angus) looked like they were sauteed, so it might have tasted different. It did, but they used too much. I think the meat also didn't taste as good as the meat used on the Whopper. It just didn't have the same grilled flavor.
It's not as good as the chicken Whopper, or even the Tender Crisp chicken sandwich, but it's not bad.