I just asked across on Apple's iMac forum - Kappy who knows his stuff replied.
"Nothing implied. Apple has provided that information on most recent models, although it may have only been in the Tech Specs.
The bus power has been the same ever since FW was included on Macs. Each port can provide 7.5 watts or one port 15 watts if nothing is connected to the other port. There are similar limitations on the USB ports. "
So nothing earth shaking there.
I'm going to give it a couple more days to a week before making a decision - Dell are due to release Merom in notebooks on the 14th so Apple should be the same or not long after - well, you'd think so.
"Nothing implied. Apple has provided that information on most recent models, although it may have only been in the Tech Specs.
The bus power has been the same ever since FW was included on Macs. Each port can provide 7.5 watts or one port 15 watts if nothing is connected to the other port. There are similar limitations on the USB ports. "
So nothing earth shaking there.
I'm going to give it a couple more days to a week before making a decision - Dell are due to release Merom in notebooks on the 14th so Apple should be the same or not long after - well, you'd think so.