I have got one of these and have used it hard for over three years.
yes it is good for most things but it simply will not make a cup of tea.
It is good on thin gauges of steel and especially good when pulsing the switch to control welding badly fitting bits of sheet without blowing holes all over the place, also when cranked up to make fillets in box section etc. Also good at laying huge welds over the surface of sculptures etc,the thermal cut out has only operated twice in this time.
The wire feed looks a bit flimsy but has never caused any problems.