35% is a nice way to go. The advantages to it have already been mentioned. Makes for a cooler interior in the summer! If you ever do tint it post some pics!
I think we should add a "Safety & Testimonials" forum as I'm sure there are Lexus owners out there that have been in accidents. They could show off how well the Lexus held up, and how well it protected them and their family.
What do you all think?