It was slim and easy to use shape, temperature rise with ceramic heater, recovery faster, I like it, but there is a problem with durability. The two bought so far have been broken in the heater attachment part in less than one year. There is no replacement part for this part, so it's okay.
This is the second one. I like it because the shape is slender and easy to use. It is also good to recover temperature quickly with ceramic heater. The difficulty is that the tip is easy to loosen. In case of lead-free solder, I think that it can not be soldered properly without this temperature.