'67-'68 is my preference and I have one of each, along with a '70 and a '72....
I like them all but I never understood why the designers made such a generic looking grill for the 71-72?
It's like they were trying to come up with a design, lunch time came and they went to the freezer to get some ice cube trays out for their drinks and Viola!
"let's make it look like one of these ice cube trays" the rest is history.....
I wonder what they were drinking?