Thanks for that, David. Those interested in a sutta reference might look here:
57. "Sariputta, there are certain recluses and brahmans whose doctrine and view is this: 'Purification comes about through the round of rebirths.' But it is impossible to find a realm in the round that I have not already  passed through in this long journey, except for the gods of the Pure Abodes; and had I passed through the round as a god in the Pure Abodes, I would never have returned to this world.http://www.accesstoinsight.org/tipitaka ... tml#fnt-20
Interesting to note the connection between the Pure Abodes and Pure Land theology, in which one is in fact encouraged to aspire to this realm.
So I suppose the Pure Abodes would rank first, human second, as preferred planes of rebirth?