My only disagreement with this post is the statement that the E-175 is underrated. I certainly think that the E-175 series is the most comfortable domestic-configured narrowbody in service today in either coach or first (on all airlines), and I think most posters here at least broadly agree. The only major drawback is that it can’t fly all missions. (And is there an oven in F? I don’t know, but I’d there isn’t, that’s a drawback to the chosen configuration, not the plane.)

Of course, that’s from the passengers’ point of view. Economics for the airline are a different consideration that I only indirectly care about! Shame the E-190 didn’t catch on for a variety of reasons.