For Neo Geo games, on Video submenu in MAMEUI64, there are a couple of options to choose:
Screen 0 Standard (4:3)
Screen 0 Cropped (304x224)
Screen 0 Stretched (304x224)
Standard (4:3)
Pixel Aspect (10:7)
Cocktail
Which option shall I choose, if I want it to look exactly like the real arcade machine? Standard (4:3) or Pixel Aspect (10:7)?