It really depends. Gothitelle/Reuniclus is more consistent because you have the ability to use trainers, but you have to Gothitelle active when trainer-locking. Not only that, you also only have one real major attacker in the deck, and that being Gothitelle. google (or really as I should say, "The Truth") is a bit less consistent because you are forced to use Supporters with Vileplume out, yet because Vileplume is a bench sitter, you have a lot of attackers to use depending on a situation, thus giving you better match ups.
In the end, the choice is yours. Either you want to have good consistency to be able to use your own trainers (Gothitelle), or you want to be ready for anything (The Truth).