I bought a pair of Klipsch RB-51s and drive them with a Topping TP-21 class T amplifier. 25W per channel is more than enough for my home office.
Out of the box, the sound was very flat. A quick tweak of the itunes eq and they sound fantastic from jazz to metal.
What's wrong with "flat"? Perfect sound from a speaker is a combination of essentially flat speaker response and extremely low distortion. If you're tweaking the frequency response curve, then you're altering the sound.