Thick, small screen, and ugly.
This is no more revolutionary than any other budget smartphone was from 2-3 years ago; which is to say, not very. This is akin to using an LG Optimus Elite in 2011. The only difference is now we have hardware tech that is 2-3 years more advanced while the software and services haven't advanced as fast, so it appears you're getting a great device.
While I will admit, the 'flagship' devices from the major manufacturers are very high priced, I have also never had a good experience using lower-end phones, no matter how promising. I give Moto respect, more for the G than this E, but mostly for the X.
While I don't want to be too pessimistic, each time I used a low-mid range device, the experience was always poor, insofar as that now, for a device I'm using all day, I'd so much rather pay the arm-and-leg for flagship devices, because the experience is much better. Sure, not as much bang-for-buck, but definitely fewer frustrations and dissatisfactions.