I cant be the only one but I like to have the speakers sited so that I can see the corners of the wall in front without looking through the speakers.
This keeps the speakers a long way apart and well into the room.
Then I have an unobstructed view of the sounstage in front of me.
Speakers are pointing just to the sides of me and into a sound absorbent
panel behind me.
This doesn`t stop sounds coming from behind and to the outsides of the speakers which I hear but dont look at.
( also wating for SE34 in trepidation )  :)

On my current setup, I get the best imaging with speakers 75 inches apart, toed in about 4" and 44" from the back wall.  I did not measure, but I think I am about 4' from the side wall on one side and a little less on the other.  

I'll try your placement in relationship to the corners idea marky.  My current setup in lopsided in that regard.

ski bum, I moved my system from a room with hardwood floors (with area rugs) and a good amount of glass into my basement with full carpet and acoustic tile ceiling.  That helped a lot.  Still not ideal, but much better.

I think power also affects imaging.  I say this for a couple reasons.  First, when I went to battery power on the t-amp, imaging improved a lot.  I also currently have a class D amp that sounds pretty good (solid bass, good midrange, etc.), but images just so-so.  I got an isolation transformer recently, plugged all components into it and now the imaging is better.  Not great, but better than it was before.  Through all this my source, ICs, power cords, outlets, speakers were all the same.  I only changed the power.

In the room with the hardwood floors, the image was above the speakers.  Now with the acoustic ceiling in the basement, it is right about at the level of my head.

I think I get a pretty good side to side and up and down image.  Also deep, but not much in front of the speakers.  I'd be interested in reading the review that describes the Decware sound stage if you recall where you read it.

I also think you need optimal toe in for your speakers.  Too much and you get a deep, but not wide image.  Too little and you get wide but not deep.

Finally, I am experimenting with speaker wire.  I have silver copper 10 guage like Zen Styx, but a different mil spec # I think.  The image seems more focused when I wrap them than when I run them parallel.

I was hoping a few more Decware vets would chime in, but maybe they are like "when you get your amp, this all becomes mute."

The same driver in the DNA horn, but in a horn cabinet I built.  I am going to buy the DNA plans and do it right when I get the time.

I originally put these in an open baffle. They sounded great, but I had to run a sub which sounded muddy to me.  I tried a small 8" and a 15" sub.  Both cheap but the 8" is relatively tight.  Still it sounded muddy.  The horn works better, but not as deep (or as musical) as the DNA.