Depends on how big the room you are using 710/Q3 with, I suppose. I heard the combination at my dealer over the weekend in a smallish room and it has no problem driving Q3 to more than adequate loudness with no sign of stress.
I have not yet heard Q3 with other amplifiers but on V3, I prefer it driven by Spectral. Personally, I find Soulution a bit too lean for my taste (I heard 710 with Q3 and 700 with Q5), perhaps its damping factor which is incredibly high, couple to Magico very very fast bass just sound a bit fatiging to me after awhile. No tympani or snare drum is that tight in real life I think. May be it was also Argento cable that my dealer was using that is also on the lean side of neutral. They are getting in MIT cables which I heard sounds great with Spectral/V3 in the past.
I have not yet heard Q3 with other amplifiers but on V3, I prefer it driven by Spectral. Personally, I find Soulution a bit too lean for my taste (I heard 710 with Q3 and 700 with Q5), perhaps its damping factor which is incredibly high, couple to Magico very very fast bass just sound a bit fatiging to me after awhile. No tympani or snare drum is that tight in real life I think. May be it was also Argento cable that my dealer was using that is also on the lean side of neutral. They are getting in MIT cables which I heard sounds great with Spectral/V3 in the past.