Cary 300SEI w/Harbeth P3SR or Spendor SA-1?

Yes, I know everyone says these great minimonitors need lots of juice! But my Cary drives my Spendor 1/2s in my well-damped small office (10 x 12 x 8) near-field set-up absolutely splendid. I have integrated an ACI sub to augment the low end. Sitting so close to the speakers (7 feet away), I listen only moderately loud at most. (If I want to crank it, I go downstairs to the SP100s!)

I might be moving the 1/2s to a different room, and would love to try the above speakers -- but only if I felt the 12 wpc SET magic would make either speaker "sing." In the room, I listen to small scale classical, Chopin, Buddy Miller, and bluegrass!

Thanks for opinions!