Best friends is up and down. Had one definitive best friend who died around 5 years back and I've got a few clusters of friends, such as school pals, people I've been in bands with.
Though in the past year a bunch of work pals and old bandmates have come together and formed a new band just to have fun with, cos we're all getting on a bit and need a hobby I suppose. It's been really nice seeing them very often, bringing people from one element of my life into the fray with those from another.
I don't think I've felt more friendship than right now in a long time because of this!