Best Sounding One-Make Separates Systems

Hi Everyone,
 
I was reading the review of the Electrocompaniet CD/PreAmp/Amp combo in the December TAS and I was intrigued by the point about certain lines of components from certain makers being MORE than the sum of their parts. I always read about mixing and matching, but seldom about the one make approach. I was wondering if there were other examples of one-make separates systems that might sound better together than if one mixed at matched at the same price range. Thinking of stuff like the SimAudio i3.3 integrated/CD player, the Cambridge 840 series, Naim, Rotel Bryston and some others than make a nice range of products in the $1500-$3000 apiece range. Any thoughts from any forum members or anyone at TAS?
I think it would interesting to see more full system separates reviews in the magazine, or at least an editor's choice type end of the year special on them in the same vein as the mixed system special in the December issue.