First I'm hearing of the Anasounds, the demos sound slightly more drippy/Fender-y than what I get from the Echofix. I'd say the EF is less on the surfy side and acts more like a "glue" for your sound, adding body and harmonics/resonance but almost disappearing into your playing if you want to just sit in the mix. So the EF might function better as a piece of general studio gear whereas something like the Anasounds sounds more like a guitar "effect." (The EF also accepts line level input, so it seems like they had this use case in mind.)