Yes, I do listen diagonally (or kitty-corner as I call it).
I'm auditioning Harbeth C7 XD over this weekend. Interesting speaker. It sounds wide open. Bass is fairly deep and tight, no bloat. Images are large. The speaker is easy to listen to. With smale scale music, it's quite good. These speakers seem to fit into my room quite well.
Downside is that the speaker can sound bright but at the same time, not all that airy in the soundstage. And tonally, it sounds a bit gray. Nothing is so harmonically fleshed out that I believe it's real. It also. never feels like it really lets loose.