Anyone compare NHT Classic Threes to SuperOnes?

I have a pair of SuperOnes bought through Audiogon that I think are great in my living rooms system (Marantz PM8004, Marantz CD6004, Denon DP-23F). I've owned some SuperZeros for 15+ years and like NHT's approach to speakers.

Question is, what will I gain if I upgrade to the Classic Threes? Living room is carpeted, 13.5'x18.5'x8'. What I'd be looking for is a bigger soundstage but not, necessarily, more volume. The SuperOnes image pretty well depending on the recording. I understand the Threes are even better.

Any thoughts about the Classic Threes would be appreciated.