I reckon GTB SYS80 and 80a games had the best sounds for the era... more depth and not tinny like WMS and BALLY... the noises are a bit more "spacey" also if you know what i mean ( doubt it - mainly the ramblings of a fruitcake),

But yes - sounds will be a bit more basic than what you are used to... memory was a new thing back then and very limited