This is pretty rad. I work in fabrication and love seeing stuff like this.
You from last week:
My bet is that most printers are vastly overbuilt in the name of precision that won't really be visible anyways after the sloppy process of spitting out molten plastic.
What's your use goal? I'm not sure what units you've used, but there's a definitely a visible difference between the Delta printers it looks like you're tooling around with and, say, a 3D45. Not that there's anything wrong with that, especially considering price point - I'm just curious what your usage is.