My system: Monbrison, Mahi's, and LV IBX.
I believe you match the amp w the speaker as long as long as the pre plays nice w the amp. I also strongly believe that price has nothing to do with system balance.
The cables I've "settled" in on are Auditorium 23's and am currently deciding betwean Acoustic Zen silvers RefII's and the Matrix. The Matrix's have some burn in left but are sounding promising. I'm hearing more "decays, ambiance, harmonic overtones" in my system than I ever had. Total approximate costs of cabeling will be around $1400 (purchased used).
I also hate switching in and out cables and it will take me months just too chose betwean the AZ's. Slow, incremental changes in the system is the style that serves me the best.