Bard or Chanter End Game

[Wonka11]

Which of the two is better for groups? Both of them share a lot of abilities, each has things the other doesn't offer, and some spells dependent on their mechanics (songs vs spells, and having to recast songs constantly... not a bad thing, but something to note).

The question is, comparing an equally skilled bard vs chanter, which is better for the group?

Also, how do each measure against each other for soloing high level?

If you had to pick only one of them to group with for the rest of eternity, which would it be? (No dodging the question, please)