I am ordering a few bulbs for my tails, I am grabbing the corner markers, they only have one option for that so no confusion there. For the other bulbs though, I thought they were all the same, and I was going to grab "Collision Catalog - 2001 - Audi - Tt Rear lamps, Tail lamps, Tail lamp bulb, 5w, 5w Back " but when I go here, I see a 21 and a 5 watt option? I am almost postive I just need the 5 watt and the stupid blade style corner marker, but thanks for confirming one way or the other