1: dont do for cheap stuf 2: plan on redo after 3-4 years ( if not good luck to remove it after that) 3: get someone qualified to do it 4: maintain it with proper products
Here is my car with vinyl http://www.detailingbliss.com/forum/off-topic/34563-my-gti.htm . I have had mine for 3 years and still looks the same. It will last for a long time if its done right make sure they use 3M only.
ORACAL is another brand that is excellent. If your choosing matte black make sure you get a few samples from different companies as some as very dull and look like crap.