Pass Labs INT-60 is another great contender - tube-like but with dynamics and slam like there's no tomorrow.
Both options take the speaker specs out of the picture. Low sensitivity, medium sensitivity, high sensitivity, any impedance, whatever -- these two amps will drive anything with aplomb and finesse.
Raven Blackhawk or Osprey are also great choices as long as you stick with high sensitivity speakers. If you're going down this path, consider Rogue Audio Cronus Magnum III and Quicksilver integrated amps as well.