If i'm honest its not something I would be qualified to comment on, as i have tried my mates DSG DCC 19" GTI PP but not driven it in anger like my own. I would say its not something to get too concerned about, if DSG is right for your situation I would go for it, as the VAQ diff will work perfectly well without question. If you want or desire a manual then its as good as any manual i have driven, for throw and mechanical feedback, and again the VAQ will work perfectly.
VAQ PP pack is a must, DSG is a personal choice for your situation.