Speaker shopping Help?

I've had Dali Helicon 400 MK II for a couple of months and love them. The only problem is they're a little too small for my 23ftx28ftx14ft room. I like a speaker that imaging is a high priority. They need to be rich but detailed, non fatiguing. Tight bass that goes down to at least 35hz. Here's my long list:
Wilson Sophia II
Kef Reference 205/2
Revel Ultima Studio II
Focal Electra 1037BE
Thiel 3.7
Sonus Faber Cremona

The rest of my rig is a computer music server running through a Bel Canto DAC 3 into a Spectron Musician III SE MK II. All MIT cables. thanks in advance for all opinions.