More important than the brand of transmission oil ( anything that meets Porsche spec will be fine ) with a plated clutch limited slip diff is that you should change it more often than with an open diff transmission . Little tiny pieces of the wear plates and clutchs will be present .
Cheaper oil changed often ( especially with a track day car) is better than expensive oil left in there for years

And how does it shift?

I’ve read up on folks using different branded oils in leu of the Porsche factory fill, and I don’t think the factory fill is the only fluid that will work as intended. I’m guessing not all of these oils have the exact same viscosity as each other, so some oils might result in easier shifting than others at different temperatures with different tradeoffs. I tend to be gentle when shifting, so I could probably get by with an oil that’s more forgiving and easier to shift, whereas other folks that track their car’s light choose an oil that’s offers slightly better protection when hot.