I bought a pair of these.... One for a daily driver and a spare..... The pencils are not cheap but I put this one through hell and am using the same tip for 2 years. Just a swipe across the damp sponge to steam clean it, and then tin it with fresh solder and it will last a long time.... But these units at 160W and an 80W iron and you can do the tough jobs..
Weller WD 1M
Weller WD 1M