@Are0h omg fellow Air user! I've been using it for some audio & video editing myself, but I'm not a heavy user and it's definitely slow for that purpose. Are you looking at upgrading to a MB Pro? In which case 2ndhand is probably wise anyway, what with Apple's "nothing but USB-C ports" shenanigans.
@lj_writes Yeah, most likely.
I don't mind the all usb-c thing as much as I thought I would mainly because of the speed.
And there are a ton of refurbished machines out there that I think will do what I need them to do.