From what I have seen Yihua products seem to have decent construction, nothing looks overtly cheap. There are some photos about if you can google well.
I have 4 Yihua 936 soldering station clones ($15, non digital) and will eventually get a couple Yihua 858D hot air stations ($70, digital). It works out to be the same price as what your after at around $85 (USD) total.
I'm planning to mod my 936's and I'm not too concerned about digital display on either really. Once I've checked it's calibrated and stable an "on" and "at temp" LED is going to be what I need in the way of features.