[SomeRandomer123]

There are so many bloody threads on this it's ridiculous.
Bascially, the Sport Auto is better than the standard auto in every area and that's not opinion, that's fact so don't let anybody tell you differently.
I didn't feel the standard auto responded or shifted quickly enough, and therefore gave power interruptions which were constant as there are 8 cogs to go through.
The Sport Auto is telepathically good and super smooth in D. And then when you want some fun, DS and Manual mode (M/S) has the car bang through the gears like a DCT transmission - it really is unbelievably quick and responsive.
Aesthetically, you get a nicer gear lever, a nice leather surround (instead of plastic), and flappy paddles. It also adds Sport+ to the car if you do not have Adaptive M Suspension.
So the standard auto is good, but for the little bit extra, you might as well purchase perfection.