Thanks Atlas
That appears to be the most objective site I've come across so far. Their rational for the ranking seems like a fairly sensible and unbiased one. For my purposes this is what I have been looking for. I’d still be curious to hear other’s opinions on JACDEC.
Obviously no ranking is perfect, as it’s such a game of statistics, but this does seem like a good rough guide for making an informed decision about carriers.
Thanks for the input everyone, much appreciated.