I just decided to give the LED displays another chance and ordered a Vishay-display with discrete LED's instead of LED-modules. Regarding to popular opinion these seem to work a lot better than PinLED's displays. All Vishay displays I found has been rather pricey, but the nice guys at PinballControllers suggested that I buy the display from Mouser instead, since their own stock ran out. Kudos!
Hopefully this display will meet my demands so that I can finally get the cabinet head together.
I can only hope, but one thing is certain - I will need a display!