Z Ultra Xperia vs Z Ultra Goodle Play Edition

Just sold my Nexus 4. I want the Xperia Z Ultra GPE, but I found and Xperia version locally for $475. I have had my Nexus 4 since it was released, so I am fairly familiar with stock Android. That said, I have no experience with Sony's take on Android. What are the pros on the Xperia edition of the Z Ultra? Cons? Which should I go for given the prices mentioned?