Are headsets easy to fit? Done everything else bar this, wondering to invest in the tools or not. My commuter badly needs a new one
Depends what type of headset.
Integrated headsets usually just sit in a recess in the head tube and dont need any special tools at all.
Old-style headsets need to be pressed into the headtube. You can get a proper headset press to do this, i'v always just used a block of wood and a hammer. As long as your careful at the start and get it going in straight it'll be fine.