Double roller vs. Single roller

It seems a double roller timing again is not available for a slant six. But the question is: is a double roller even necessary??

It seems a lot of high performance engines of other brands use a single roller with no issues.

Is a double roller just one of those upgrades that everyone thinks they need or is it smart money on a street driven car?

I am looking for the best timing chain option for a 1972 slant six.