Pioneer 170: Focus -, black level o; Color gradations: o, o plasticity => Image fuzzy
Panasonic BDT 500: Focus +, black level +; Color gradations: o, o plasticity => picture seemed a bit flat
Marantz UD 5007: Focus +, black level +; Color gradations: +, plasticity +
Yamaha BD A 1040: Focus ++, black level +; Color gradations: +, plasticity + => images so crisp and vibrant colors.
Overall, the Pioneer worked on unschärfsten.