I have had this unit since before Christmas. It is a great unit, solid feeling with a nice handle. Most of the weight comes from a decent transformer, but the PCB board quality could be better. I think the tips it comes with are fine for what they are, but if you want a noticable improvement go get some genuine Hakko T18 tips (900M). They are so much better, also the unit does come (at least mine did) slightly out of adjustment. If you have a multimeter with a temp probe you can calibrate it yourself. Just look under the control knob, theirs a little hole you can stick a #1 Phillips screwdriver into. Just as you'd expect counterclockwise lowers the temp, clockwise raises it. But WARNING this adjustment should be done by someone at least confident with electronics circuits, and a fraction of a mm of adjustment can jump the unit by 30+ degrees Celsius.