I'm German and I find him easier to understand translated to English, honestly. If you feel like the English is anachronistic-sounding at times, whoo boy did they write in a stilted way in German at the time. I'm guessing that most translations have been updated somewhat as well, while the original German obviously stayed exactly the same, compounding that whole issue. It's not that I don't get him in German, but it takes longer to get him, I need to reread sentences a lot - in English it's comparably straight-forward, really.
It's worth noting that this holds mostly true for Capital, for example the manifesto is pretty accessible in German too, as you might imagine