In the next week I am going to get the windows tinted in my 1999 Jetta VR6 (back window and two back-seat windows -- black, the front seat windows not quite as dark). I have never gotten the windows tinted in any car I owned so is their anything I should look for when choosing a shop? Type of film? Cost? etc.? Any info or experiences would be appreciated. Thanks Jeff in S.D. CA.