New to these forums, so can't tell what size engine your car's got, just that it's an 08MY petrol.
I quite agree that if you're doing 6K miles per year, mostly stop/start, then you're doing the right thing by going for fixed-interval servicing. I do 10K miles per year, based on a 12-mile trip to work, so I shall be going for fixed servicing when I pick up my new Octavia some time late Oct./early Nov.
That means you need to use VW 501 01 or VW 502 00 oil if you've got a 1.4 or a 1.6, VW 502 00 oil if you've got a 1.8, and VW 504 00 oil if you've got a 2.0. That's according to the on-line documentation that someone's very kindly linked to this forum - your car's handbook may differ.
So your answer is (it seems to me) - go for the best -quality oil offered by your dealer that meets the appropriate one of those VW specs - if you've got a 1.4, 1.6 or 1.8, there's no need to pay more for the longlife spec oil. If you've got a 2.0 engine, then it's easy because (according to the on-line documentation, anyway), the spec is the same for fixed and variable-interval servicing.
Hope that answers your question. Good luck on Wednesday!