OK... so saying it's superior to the Harbor Freight Air Eraser seems like a "Well... Duh" type of comment, but I say it hopefully to spare other people from wasting their money like I did on what's good looking junk, which is what the HF is... it looks good in the box, but performs horribly.First off, I really like the media reservoir being on the bottom instead of a top mounted gravity feed, it has a better balance to me. Second, I like it's larger size. Both of these attributes makes it easier to fill/re-fill the reservoir.I've only used it a couple of this so far, with more projects to come, and it operated without issues, giving me the exact results that I was looking for.For people getting into this for the first time... first do practice runs on the same type of material as what you plan to etch so you can get the feel of how this thing works, and "dial in" the air pressure to the media that gives you the type of results (shallow or deep) before you even get near what you plan to etch/texture.