The Turtle

and what color would you recommend for a europa blue A4. i was thinking 20% black or metallic.

Monkeyboy

Formula 1 had either smoke or semi-reflective. I liked the semi on my color car.
35% is about as dark as I would like (and that's the darkest legal tint here). I could stand it darker during the daytime, but at night 35% is as dark as I would like it.
Llumar (and I think Formula 1 is a offshoot of Llumar) is one of the more popular name brands. Get a reputable shop to do your work.

intrigue

The brand I got was SolarGuard semi-metallic film because that was what the tint shop had, and the place had come recommended to me from many people.

It seems that Llumar semi-metallic is the best brand. For darkness, I have 32% on my 4 windows and 13% on my back windshield, I really like the look. The overall look of the car is much more sleek.

I think 20% would look great on the Europa Blue - go ahead and do it. I stuck with 35% because I was scared of getting pulled over for it (no legal tint allowed in front in california, but you can usually get away with 35%).

Getting a good shop to do it is the key thing. Llumar is what most of the people on this forum suggest/have. Try to have someone suggest a shop in your area that you know will do a good job. Look for things such as using 1 piece tint for back windshield and lifetime warranty against bubbles/peeling.

EdP

<center><img src="http://pictureposter.audiworld.com/2465/aprbrakes1.jpg"></center><p>and I got the smoke. You can see it in the corner of the pic :P

CMC

18% SolarGuard

Bill In SoCal

I think SolarGuard and LLumar are both excellent brands. LLumar just gets more attention here.

Monkeyboy

I know it was a difficult decision when we were looking at the two types side by side.

I am very happy with mine.

EdP

I should be renting out hoes from the back seat.

SameerP

35% LLumar charcoal...so lovely.