I never said this thread was being used to select a pair of speakers. But if I was, what would you say if my amplification was a 7 watt tube amp?
I'll take it for granted that this may be a question you want input on from more than one person. In my experience given 90db at 8 ohms, 7 watts would not be enough for anything but moderate volumes in a small room. Push it any further and you will start to hear quite a bit of breaking up and distortion. That's not to say that, without pushing them too far, that combination may not sound remarkable, but certainly it will not go very loud without distortion. I've tried this combination (actually 8 wpc and 11 wpc monoblock amps) with the SR17's I mentioned, as well as slightly more efficient Soliloquy 5.3's. The Soliliquy's did a bit better, but neither would not be my recommendation of a very versatile/flexible combination. Different amp/speaker combinations may do better than others, but as a broad generalization I'd say you are not in the realms of what I'd recommend for low-watts. I'd be looking at around 96db and up, but, as I think Marakanetz might be implying, sensitivity is only one part of the equation...a piece of the puzzle.
Marco