It's pretty close, from what I remember, to what a Whopper tastes like. I liked it.
Though part of my thinking in being a vegetarian was to avoid the fast food places as unhealthy food. I don't if this trend in fast food places offering meatless alternatives actually makes fast food any healthier.
Fast food drive thru makes feeding your face easy. Hard to escape consumerism with how easy they are making it to consume.