2.66 low gear vs close ratio

Which trans is the better one? Does one have an advantage over the other when comparing the ratios of the the gears? The earlier '67-'69 4 speeds had the 2.66 low first ( what I have in my car ) and the later had a 2.44 first with closer gear ratios. What are the advantages and disadvantages of each? I have driven a couple Darts with the 2.66 low gear but have never driven one with the close ratio trans. Can you tell the difference is normal driving? I am just curious is all.