I have smoke grey 35% on the sides and rear. Not too dark that the police will mess with me but dark enough that you can't really see much especially at night. Tint is a nice privacy feature as well as sunblock.
Make sure if you get it done at a shop they give you a warranty against flaws in the tint and application. Haven't needed to get mine redone but peeling and bubbling tint is a no no.
