Lenny installed an EXCELLENT window tinting to my CTS-V yesterday. (this is the 2nd car Lenny has tinted for me). The windshield is very wide with a 62.3 degree angle and the sun pours in!
I chose Lumar ceramic in a medium shade of gray for the fronts the darker shade for the rear windows and back windshield. Also chose a 'visor tint' to the front windshield which has stopped the SUN from blinding me in the afternoon! (The visor tint starts from the top of the windshield to approximately 8" down). It doesn't inhibit my vision it HELPS it. No more squinting or being blinded!. Considering the Phoenix sun is relentless, I think my choice was ideal and also beneficial to protecting the interior seats and dashboard),
Lenny is a caring individual and wants you to be happy with your choice of tints and his installation of them. You will be. I recommend him highly!