Thanks again, would look forward to meeting and comparing louvres ;-)
I'm happy being under endowed in terms of louvres. Advantage in not letting water in but also less fiddly bits when washing.
One of the reasons we bought the car was that all the options that we would have chosen were in the car that we bought within a reasonable budget. However I'm well aware that there was probably loads of little options that I knew nothing about. If I'd bought brand new I'd have spent months and lots of spreadsheet effort on deciding what to have.
The only option that, with hindsight only, I would have liked was reclining seats. Mainly to make getting at the rear storage easier with the hood up. But I think I can live with that!