[joelegner]

I prefer "to go" over "takeaway" for two essentially meaningless reasons:

First, _go_ is older than _away_. According to Etymology Online, go dates back to Old English ("gan"), while away in sense of "at a distance" is from 1712. Second, I get to save a syllable.

So "to go" is older and less effortful than "takeaway". Also, both work.