I already tinted my windows and the look is great as it blends the windows in with the trim around them. I would suggest doing darker than you normally would as the interior is very light in color (and the windshield is large) and it will not be as dark as you think... as in 18% all around...
Also, on the cloudy and bubbly comment... if you go with a good film you will not have a problem. I have had 10 year old cars with tint that still looked perfect. Plus the better films come with warranties against those issues.