FTFD have been one of my favorite bands for the past few years, but they've never come through on a headlining tour. This is the highest on the bill I've ever seen them, so I'm definitely going just for them and UABB. I heard Volumes is good but i haven't listened to them. Don't like the others.
They've done a headliner with Legend before. I don't think it wasn't a long one though.
And you should definitely listen to Volumes.