Frustro looks more consistent - there's always a perspective shift from the top to the bottom of each letter, and the letters go together nicely. Macula looks more like the letters have been designed individually then sat next to each other.
I can't see using either of these typefaces to say, write a document, but I don't think that's what they're really for. I think they're more for Signage, Titles, etc. where they can be the focus, rather than the medium behind the focus.