My favorites are:
1969 (Dad and his brother had identical '69 3/4-ton sequential serial numbered trucks, ordered new!);
1967 (smooth styling, no sidemarkers);
1966 (Dad's shop had two, bought new, sweet styling!)
and 1955 (I had a Cameo that I paid $200 (that's right!) in 1984 that I drove all over the place!)
The 1946 and 1949 trucks are really nice, too, for their smoothness and exceptional lines.
My "lottery garage" would have these!