Warranties are very personal, everyone has different needs etc. All depends how risk adverse you are, I had the comp mondial one and paid £60 pcm and they still were a pain with an airbag and a misfire so I paid myself. I kept it for the big bits really and said that I'd not bother with the recent A7, but guess what, I've just extended it last week for a similar amount.
I've just had a cam belt go on a company skoda and the bill was going to be £8.5k as its on 85k (2.5 years old) I've shaved quite a few grand off this taking it from the dealer to an indi.
All horses for courses.