I'm fairly sure that the reason the MK7 couldn't be specced with 19s and the sunroof (like Jim I think VW calling it a panoramic roof is a bit cheeky) was due to the extra weight and the emissions ie taking it out of it's bracket. I doubt VW give a monkeys about driving characteristics! As to that, in road driving I doubt the extra weight would really be noticed. Even though mine is damaged and awaiting repair, I'm very pleased with it, on the odd time I've been able to get it open it's been great, OH loves it too and it's even nice with it closed. As for creaks and groans, that's just the seals asking for some lubrication, same as the door seals. The only other point to bear in mind is to periodically check that the drain tubes aren't blocked. If you fancy getting the sunroof, just do it!