I have had good experiences with the protection invisibleshields provide, but the full body ones were brutal to put on. The screen only one was a piece of cake and it's "invisible.".
I'd absolutely spring for the professional installation on the full body.
The shields cost like $24.99ish, what do they charge to install it for you? And do they make it perfect?
Brutal you say? lol reminds me of Dethklok, and what we should now adopt as the unofficial official song of the ThunderBolt.... Thunder Hores by Dethklok!!!