I have 3.6's, and they image very well, but as others have alluded, are very sensitive to upstream gear. For soundstage, I found the biggest improvement in my system by upgrading the amps. After auditioning several amps, I ended up buying a pair of Theta Enterprises, and they present a very deep and wide soundstage with my Thiels. Instruments are well placed, and you really don't hear the speakers at all. In fact, if you close your eyes, you really can't hear them at all, though most of the soundstage is between the speakers. I have mine about 11' apart, and my listening position is about 10' from each. For speaker cables, I tried lower end MIT, but wasn't happy, so I upgraded to Cardas Neutral Reference, and I am very happy with them.
Tom.