Thank you for the replies so far.
XG9911 is for the 2.0T and 2.5 VW/Audi cars. Browsing forums, It's all German, all the time when it comes to oils/coolant/filters, with it nearly blasphemous to do otherwise. Just seeing if there's any real reason to deviate from the Ultra, and if the excellent performance offered in the canister version translates over to the cartridge.