I have never got the fuss about Cora's. I've been there a few times as it is close to work and we sometimes do a team breakfast before heading into work.
The portions are good, I have to say. The prices are very decent considering it's in the downtown core. Apart from that, everything else is, well...meh.
The omelettes are bland and taste like processed plastic. Fruits taste like...fruits. The coffee is decent. Having a fruit platter is a decent option. However, my idea of breakfast is a good Irish breakfast - eggs, sausages and bacon. Unfortunately, Cora's is not the place to find that.