If I was in the position of having to make a choice this quarter, I would be checking out the Tiguan as it offers a great package for the money.
I think the Valencia 19″ alloys look well to be honest, and as you say the slightly higher profile of tyre would be a touch more comfortable on the drive.
I’m sure I read on the VW site that the 20″ Missano alloys are available as a £500 upgrade if anyone’s really bothered though.
Personally, i’m playing the waiting game to see if Subaru come good, so this will pass me by, but for some its a deal worth jumping on.