I hope your wife will appreciate timeless elegant slim design of confidence c4 in live becuz if your amp will be up to task you will choose c4-s regarding the sound...but in the end you'll decide will the sound of c4-s be worth of price difference...i dont know what music do you listen but observe how c4-s behave on large scale music...great midhall presentation...you will be suprised...but also has intimacy of mini monitor speaker with chamber music and jazz quartets...the box is even more dead than contours...and has more real bass that is not shaking rooms and punching you in chest that gets you tired after half hour of listening...it has clean fast and tight bass...notice that though Focus and C4-s share same raw driver esotar2 how much better driver is customised on c4s...its brutal...just listen to some solo piano music and notice how much more musical involving and swaying c4 sounds...notice how much better attack and decay is and more real presentation of low level details...it sounds just right...that is my experience...also if you can play with different sources and cables a bit so you dont write off one of speakers too soon...i would reccomend you that you use some fast silver cables...im using Crystal cables Ultra SC and IC with great results...great cables and sources is also must...or your speakers will underperform...every of 3 mentioned speakers is a gem and i wouldnt be suprised if you choose Focus model...anyway good luck and take your time...you have sweet worries...
Regards
Regards