Aaron, reading between the lines I can assume one thing, you should definitely get the DHP.
Why, because you have a Porsche Boxter.
Not that it is a "magical" or Super car, but because it tells me you are a car guy and enjoy driving.
I have found there are huge differences in models with and without this option, no matter the name of it or the brand it comes on.
But then again, I have had people say, "Why would you buy a BMW when you can buy 2 Kias for the same money".
To them I say, "If I have to explain why, I am just wasting my breath".