How important is it for you to attain a holographic image?

I’ve been known to leave the mono switch on after playing a mono album an not notice for a day or two of stereo recordings so probably not a major issue for me.

What I do dislike is when the sound dives for the closest speaker when I listen off axis as I’m often not listening alone, it’s possible to set speakers up so this doesn’t happen and the image stays stabe but the positioning needs to be quite precise. I found Sumiko Masterset quite useful for this.

Yeti, I know it's possible to have a very wide "sweet spot", but very expensive; I don't have it, mine is the same as yours.

Fleschler, probably none of our systems are identical, and yours can do things mine wont do.

yeti42  It helps to widen the sweet spot if you turn your speakers inward so the axis' crosses in front of your head when you are in the sweet spot. 

Woke up this morning to a track that was three dimensional (Gershwin 2nd Rhapsody, Tilson-Thomas, L.A. Phil.). Maybe my hearing got more acute, or my system suddenly improved. I have been experimenting with seating positions lately.
Anyway, although not essential, it’s nice to have.
BTW, My system does have a very wide “sweet spot.”