Need to compare "apples with apples" - I needed a desoldering and soldering tool. Hakko 701 VS Aoyue 701.
Hakko was my first choice, but product availability, spare parts support and price are poor. Looking at a minimum of $1400 for the unit
Aoyue was brought to my attention by Jacob, and is easily available (unit and spares) and the price was $311 delivered. Over $1000 cheaper and I didn't need a step down etc..
I'm reviewing the unit as a "hobbyist" - because I don't repair boards for a living. But I enjoy repairs.
I guess what I'm saying is that I was prepared to buy a Hakko - but it was cost prohibitive, spares are difficult to find and no-one seemed to want my Business. so I have a Aoyue and $1000 in my pocket !