Bel Canto ACI600 vs Black EX Sepates


I'm trying to decide between these two Bel Canto beauties for an office setup. Both are similarly priced.... The ACI 600 is an integrated version of the 55k Black system. The Black EX separates are the more budget friendly system.

Whatever I choose, they'll be driving KEF Reference 1's.

I'm looking for advice/impressions from people who have owned these systems or heard them at an audio show/dealer. What are the pros/cons of each setup?

Please, no advice on different electronics or speakers.

Thanks!
Ken
keoliphant
@keoliphant Did you decide? I'm in the market for a Pre-amp and a DAC. My dealer suggested Bel Canto EX DAC as well. I was planning to go with Ref 6 + PS Audio Direct Stream DAC but now I'm confused. I may need to listen to this. Since I see very fewer reviews on EX DAC, I'm still hesitant. 
@karurravi Still trying to decide...leaning toward the Hegel H590 but also strongly considering the Black EX separates. I tried to get out to RMAF this weekend but work schedule didn't allow it. Stay tuned.
I know this is a old post but I was wondering if anyone purchased the black separate ? I have a full current luxman setup and was thinking of trading it in . 

Thoughts ?