TX-Techman

I plan to have the Expel Ultimate film installed on my 2008 coupe. There are several installers in the area and I have talked to a couple but would like have a few references from some of you who have had this film installed.
I am concerned about the yellowing characteristics on some of the other products, so the 10 year warranty on this film is pretty impressive. But if you have had good success with some other films please let me know. My car is garaged most of the time so yellowing due to UV should not be an issue.
Any information you have would be greatly appreciated.
Have a great 4th!
Kenneth