I agree that was their best.
I was about 8 or 9 years old when The Carpenters were at their peak in the early 1970s. I used to think the voice I heard on the radio (Karen Carpenter) was actually that of Laurie Partridge from the TV show.
So even to this day, hearing a Carpenters song brings up an image of Susan Dey in my brain.
That's a good image.