I`ll be using a DA but as yet products and pads is also undecided as I`m also researching those too.
Maybe Scholl S20 Black ... dunno yet though for sure.
There's probably a 100 ways you could go with Polishes and Pads, and come out with outstanding end results.
Since we don't know the condition of your vehicle, and nobody can judge that on the web what will work best no matter how descriptive, you'll have to make that call.
And it might be wise to have a couple different Polish and Pad Combos on hand. Same with what machine and Backing Plate?
From what I know, and have read, VW's have fairly hard paint.
If, for say you have a GG6, or PC7424XP Machine with 5" Backing Plate, then I'd recommend the 5.5" LC ThinPro Pads as a top choice.
If just minor wash induced swirling-hazing, and/or just needing a little "spiffing up" to amp gloss prior to protection products, I'd likely recommend the White Pads.
In that case, a fine to ultra fine finishing Polish. Meguiars #205 fits the bill nicely. And I've always been a huge Wolfgang Fan, their Total Swirl Remover (TSR) is outstanding, no doubt made by Menzerna USA.
TSR will finish down perfectly, to a flawless show car shine, I've found no need to then go on to their "Finishing Glaze", which is actually a super fine finishing polish, not a glaze, and it probably the equivalent of Menzerna 3500-3800. But with Black Paint, that can maybe cause a need for further refinement.
Cause you see everything on Black, even a metallic Black.
For deeper "RIDS", which are Random Isolated Deeper Scratches, then perhaps WG Uber Compound, and possibly the coarser Orange Thin Pro Pads.
There's countless other combos, Carpro, Griots Polishes, Pinnacle, McKees, all trusted and foolproof products, besides countless others.
"You" will have to make the call, as to what will work best. The proverbial "test spot" should be employed always.
Vehicle should at least be clayed prior to Polishing, you want to get those "cooties" off the paint first. If willing to delve further, then a good Iron Remover, such as Carpro Iron-X. (Have a Clothes Pin for your Nose!) LOL
The "Plastic Baggie Test" will help you determine just how contaminant free your paint is prior to any and all further processes.
Hope this helps.