I have heard both the SF and the WB speakers, but in different settings. Both are involving and satisfying. The Cremona is definitely a "voiced" speaker, whereas the WB is more objective. The Cremona sounds more like music to me.
However, an 845 amp isn't enough for the Cremona. You'll get sound, but the speaker just won't get out of "hifi-ness" realm. I was lukewarm on the Cremonas until I heard them on McIntosh MC501s and then again driven by McIntosh MC1201s. Yeah, $16,000 of amplification on $8,000/pr. speakers. The 501s were the tipping point for exceptionalism from the Cremona. The MC1201s made the Cremonas disappear. You can't really get the potential of the Cremona using modest power and less than blockbuster (in quality) amps.
Phil
However, an 845 amp isn't enough for the Cremona. You'll get sound, but the speaker just won't get out of "hifi-ness" realm. I was lukewarm on the Cremonas until I heard them on McIntosh MC501s and then again driven by McIntosh MC1201s. Yeah, $16,000 of amplification on $8,000/pr. speakers. The 501s were the tipping point for exceptionalism from the Cremona. The MC1201s made the Cremonas disappear. You can't really get the potential of the Cremona using modest power and less than blockbuster (in quality) amps.
Phil