Thanks -saint- and cptnmorgan, thats exactly what I needed. I think I'm going to go with 20% all around. It definatlly looks dark enough and since I'm not really sure about the limo (definatlly illegal here) being to dark at night I think its a safe bet to go with the 20%.

BTW, thanks to everyone who helped on this post. It's really hard to make a choice when there are so many selections and your not quite sure what has worked really well before.