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

The dilemma now is between the O/93 and the O/96 (apart from cost). Which ones are more suitable for nighttime low listening?

The O/96's. But only by a slight margin. The names are derived from their respective claimed sensitivities though JA measured slightly lower figures. The O/96 has a higher performance woofer (more powerful magnet assembly). Over and above, the O/96 has a looser, more lively sound and the 0/93 is slightly buttoned-up by comparison. The O/96's are a bit more picky with room placement. 

For the money, I would get the O/93s. I think they are more cohesive and balanced. I noticed little to no difference in efficiency.

Fred, thanks for the comment. No problems on my end.

For the money, I would get the O/93s. I think they are more cohesive and balanced. I noticed little to no difference in efficiency.

This is exactly what Don Better told me the one and only time I came to visit him up in Cleveland to audition the O/93's. He did not have the O/96's available to compare and he knew that I was primarily interested in the 93's. I paid for them that day and received them directly from Brooklyn a week later. It appears he lost his Devore dealership rights. 

At Axpona one year I went back and forth between a room with the O/96's and a room with the O/93's, no less than four times each. I liked the 96's a lot more than the 93's even though they sounded less cohesive-they were far more engaging. They were set up quite differently-the 96's along the long wall with nearfield seating and the 93's along the short wall with seating further back. 

I continue to believe, btw, that if you can afford the 96's, get them. I believe that as I said before, they will sound better at low volumes than the 93's. The price differential is surprisingly high given that they share the identical tweeter and nearly identical woofer and the guy behind Box Furniture Co. in the same Brooklyn pier warehouse as Devore that builds his cabinets can not be charging that much more for the bigger box. The x-over is said to be more "sophisticated", whatever that means, in the '96. I would love to ask John Devore what accounts for the price difference. I am sure he would say what I already said though-the woofer, cross-over, and cabinet. 

I've owned the O/93 and heard the O/96 on many occasions. I agree with fsonicsmith get the 96 if you can. I've heard the same things, one being that the woofer is substantially better designed and compromises had to be made for the 93. Hard to get a woofer to play deep and still play mids well. Both great speakers.