I have to agree. We do this as a living here in Portland and it is not easy. We chose not to offer these for sale in kit form due to the inability for most to just throw them on the first time. We are very competitiive in our pricing but our work speaks for itself. We take care of all the luxury dealers here in the area.
As for the line, that is true, it goes right across the middle of the hood, but from a few feet back you cannot see it at all and the huge upside is that you don't get any chips. It is truly worth the money to have it proffesionally installed by a reputable shop.
If any of you have questions about the products available I would be more than happy to be a sounding board, I can even find a reputable installer in your area for you guys. We truly belive in the product and it's abilities.