Is there a reason that you're downsizing? I'm asking because you may be going backwards when you may be fine with what you have. If the c-j's are paid for, you might audition these integrateds against them before jumping into something.
Like S7horton, I have not the B&W Signature 805's, but their father, the Silver Signatures. So we're basically on the same playing field.
I had a c-j DA3 DAC that I really, really liked. I traded it in on a Musical Fidelity Tri-Vista 21, which I think blows it out of the water. However, while I was waiting for it to come in, I took my c-j to the dealer and compared it against the MF Tri-Vista SACD. In 'CD' mode, I would not have chosen the Tri-Vista SACD over the c-j.
I did end up after that comparision or audition, trading in my Krell pre-amp and amp for the MF A308cr Pre-amp and Amp. They had to ordered them too, just like the Tri-Vista 21. In the meantime, my dealer loaned me an A3.2 Integrated. For the next four days, I was sick to my stomach thinking that I had made the biggest mistake of my life. I had the A3.2 running 24 a day thinking that it needed to burn in, but it didn't help. The A3.2 literally turned my stomach. I took it back and listened to nothing until the A308's arrived rather than listening to the A3.2. I even talked to my dealer and called another stereophile friend who assured me that once the A308's arrived, everything would be alright.
I've never regretted trading in the Krell KRC-3 and KSA-50S for the MF A308's, but the A3.2 couldn't even hold a candle to the A308 combo. My next upgrade though is to replace the A308 Pre-Amp with the c-j Premier 17LS2. Another out of state dealer told me NOT to replace the A308 amp, because with the c-j Pre-Amp, the A308 Amp will sing like I've never heard it sing.
All I'm saying is that I really like the MF higher end equipment, but I think the c-j equipment is something special that you may not want to give up without a good reason and side-by-side comparision.