If you found the Harbeth is a warm sounding speaker, a Spendor would sure not be the speaker for you! I have owned many of both brands and the Spendor is a warmer sounding speaker than the Harbeth!
yogi is not wrong on this statement, but spendor’s product line is bifurcated... the standmount 'classic' series is warmer (old school bbc lossy cabinet design)... floorstanding 'd' series (d7 d9) is a much modern hifi sound (rigid cabinets etc etc) ... i would say that newer harbeths pretty much fall in the middle of the two spendor lines