Has anyone seen the A Fistful of Dollars Japanese Blu-Ray by NBCUniversal? From what I've heard, it may be the best available version thus far. It uses the stellar Italian restoration that debuted on RHV's BD. Furthermore, it has the 5.1 and the mono tracks in DTS-HD.
Additionally, for what it's worth, I respectfully disagree with the assessments of the German BDs as the best available versions.
Universum's encode of A Fistful of Dollars, to my eyes, looks noticeably worse than RHV's, which is also AVC and of a comparable bitrate (2700kbps to the German's 29995kbps). As you can see in this caps-a-holic comparison, the German BD is redder and darker, which results in the slight loss of detail. The reddishness skews the flesh tones rather than making them look more accurate.
Also, I think Universum made the wrong choice to use the MGM master for For a Few Dollars More. While I acquiesce to the fact that the Mondo looks to have had some slight grain-reduction, the very noticeable sharpening on the MGM master has far more damaging effects on the video. I'm not convinced that all the grain is natural; it looks mixed with video noise. Also, there are weird film artifacts; the Mondo looks like the source was cleaned more thoroughly before scanning. Overall, the MGM master seems to be a pretty dated scan that winds up looking worse than the Italian one. The color timing is what really gets me: it's far less vibrant and leans towards blue, as if someone tried "normalizing"/"homogenizing" the look for home video. Take a look at the whites in this comparison, keeping in mind that they're supposed to be lit by warm lamps, not flourescents.
Of course, as stated in the OP, both of these have the opening titles in German...
As for the rest of the movies, the US BD of Duck You Sucker is terrible. It's from a clearly outdated master with another "homogenized" color palette. The fan preservations of Once Upon a Time in the West and Once Upon a Time in America are truly a sight to hear and behold. The former's lossless mono from the LD sounds fantastic, and I'm glad to see the movie rightfully presented without the Harmonica Rising sequence. kk650's regrade really rights a lot of wrongs, making a previously unwatchable master something decent. Only when watching this was I able to appreciate the detail that the restoration had.