High value, giant killer speakers?

Wharfedale and Quad when you are 2 of the very very few vertically alligned companies in the game with odles of money and R&D at your disposal with Peter Comeau 1 of the best designers ever, it's a no brainier....The Wharfedale D330 is a killer lil Floorstander, the Diamond 11.1 just continues the Diamond tradition, the Heritage Linton and Denton models, and the Quad S and Z lines. The new Evo4 line and the Flagships will be dropped soon, real music at real prices with killer build and technology!

...all these amazing and rather consistent suggestions are making me want to rethink my solution to this problem.

Has anyone tries a pair of properly powered Infinity Kappa 7’s or 8’s? How do they compare to the many suggestions here?

"Everyone's favorite is a "giant killer". Has to be in order to assuage the restless ego. Heaven forbid you actually spent money on an average performer!"

No ego here... and I think I spent my money on an average performer.

"A purported giant killer that can't do under 35Hz +/-3dB? Really? I think not."

Maybe a speaker itself won't do that... but with proper placement it's not to hard to make the room go that low.  I only use my sub for movies... so something is working for me.  :)

On the other hand... There are "giant killer" desktop speakers. Near field as well.

If you can find a used pair of Cambridge Audio S30’s? Cheap.. Giant killers!
Phase coherent and excellent sounding speaker.   
Excellent sound always trumps impressive specs in areas most do not listen for. 

Just who are these giants we’re trying to kill with our speakers? I'll apologize in advance :-) 
FWIW, I enjoy Wilson Cubs with sub woofer.