Which pair has the more consistent volume?

I have read that pairs like GBPUSD are traded primarily during the Euro session and remain untouched during the Australasian session.

I know the Australasian session always has less volume, but which pair is more balanced?

If you relate volume with range, this will help:

http://www.forexfactory.com/forexfor...ead.php?t=5425

If not, it won't.