DeVore O/93 or PureAudioProject Duet15 for a First Watt SIT-3?

Hi
What do you think would be better for a warm organic late night listening (classic music, opera and jazz)?
Stereophile reviewed the O/93 as a perfect pairing with SIT-3 (even is SIT-3 prefers low impedance speakers).
Duet15 seems to me more sensible (97db vs 93db) (and Steve Guttenberg think are top).
My current speakers are 4ohms / 87db Avalon Indra, absolute fantastic at their 80db listening kingdom.

Thanks