Odin 2 portal, or Odin 3?

I'm trying to choose between buying the Odin 2 Portal and the Odin 3.

I saw that the Odin 3 is considered more powerful, but that the Odin 2 portal is more optimized because of its processor, and that its screen his bigger.

The Odin 3 Pro (12+256) is 439$,

And the Odin 2 Portal Pro (12+512) is 369$ right now on sale

What do you guys think?