Went with the German MiniPixx because I am German myself 
Wasn’t interested in something cheap from Alibaba or similar, my project requires good quality components (I will soon show why). The configuration doesn’t really matter. Some decoders feature pre-configurations, like addressing 2 or 3 LEDs at once with the same SPI signal, which comes handy for longer LED stripe projects - you don’t run out of DMX channels, as you simply make your pixels bigger. In my case, a 16-LED stripe segment only requires 8 pixels x3 = 24 RGB channels instead of 48.
But most standard controllers should do the job.
EDIT: You can see the results and further progress in my ‘Anubis’ thread → HERE