I got a 1.6mm chisel tip for my Hakko 888.
It's £17.50 to get a genuine one!! I can get 10 for a fiver or whatever from Fleabay but they are crappy copies and they are total guff!
Proto-PIC was doing the genuine Hakko's for £12 and it's only about 20 mins from me so super fast delivery but they seem to have stopped for some reason! They only have the conical ones in stock now and I have 1 of them which seems to be a good all round size. I have the 0.8mm and 2,4mm chisel tips but sods law dictates that the size in between would be a better all rounder!
I just got the Hakko 888-D a couple of days ago and thought after my first quick try out there wasn't too much difference between the genuine Hakko and the copy Katsu 852-D I have been using up till now.
I had a proper days soldering on the 888 today and there is a big difference when you are really working the iron or getting in about heat sinks and stuff like that. The genuine Hakko really comes into it's own when you work it hard. The Katsu is ok for light work if you take your time and it has the hot air too, so it will make a good second iron to have on the bench.