Floorstanders with a large sweetspot

Check out the Philarmonic 2. The port is on the top of the lower cabinet so they can be placed right up against the wall and it will still give some room for the OB mid to breathe.
http://philharmonicaudio.com/philharmonic2.html
The Salk Soundtowers can be placed as close a 1' to the wall

You might want to look into waveguide designs

If you want a large sweetspot, Ohms might be a good candidate for you. They are sold direct, but do have a 4 month home trial period with a money back guarantee. (I think you're still on the hook for return shipping, but still a good deal.)

I'm not a current owner, but have had them in the past and can recommend them for any short list of candidates.

Audio Note model E is almost a floorstander and when placed in the corner will throw a huge soundstage and sweetspot.

Also consider Audiokinesis.

With re: to the Ohms, without heroic room treatment, they aren't well suited for close wall placement.