Serenity - I had looked at 1/24th octave, 1/12th octave and 1/3rd octave (Stereophile uses 1/3rd in its measurements) and settled on 1/6th, as it normally considered the resolution at which we hear.

These are "ungated". Both center channels are posted as raw, in the room, curves. No Audyssey filters were applied.

The response differences are room related, but the exercise is not about measuring the room. The vast majority of rooms have more than a 15 dB "total window" .. or +/- 7.5 dB, in terms of a response curve with a speaker that has the normal +/- 3 dB response curve in an anechoic setting.

The idea that a room will add 4 dB in peaks and subtract 4 dB in nulls is not surprising, true?

In this case, one graph is +/- 6.5 dB off axis, and the other +/- 7 dB off axis. That's actually pretty good in room.

What are we looking for here?

Which speaker, in everyone's opinion, looks as if it has a superior off axis response for real world listening?