I want to get a clear bra for my Z when I get it and was wondering if anyone has gotten one in this area and has a good person/shop to recommend.

Also I have read alot of posts that say 3M is good and others are good but I have also read that 3M turns yellow after a while. So I was wondering does 3M normally come with a good warranty or is their another brand that typically has a longer warranty?

Thanks in advance.