Needing a set of new tyres for my 2008 S5, 255 35 R19. After much deliberation I have narrowed it down to two options which I can get for around the £130 mark per corner - Michelin Pilot Sport 4 or Continental SportContact 6. Just wondering if anyone has any experience with them. All online reviews basically have them neck and neck - given me plenty of food for thought! Thanks in advance!