I live in FL so it is almost necessary. Just had my wife's 420 done and it was $160 for lifetime warranty titanium tint.
Question I have is in my ML(no tint) I have heard the metal tints mess up your radio reception. My antena is built in to the rear window, any advice.
As far as visibility, the titanium tint blocks 9?% percent coming in but is REAL light looking out. Great stuff. ML is not going to be real cheap with all that glass.