I don't think for a while, there isn't a need. It would appear in the MP first. The iMac is geared toward consumers, (yes yes I know they are very powerful and all but thats who they are geared for), and the average consumer knows nothing of an eSata port or whats it's even used for.
I was wondering whether I should buy an external HD with FW400/USB + FW800 or FW400/USB + eSata. Should I go for one with FW800? The 20'' model I'm gonna buy has neither of them..
How much of a price difference is there to the quad-interface model?
You could just get this very meant-to-be-near-a-Mac one and you'll have all the interfaces you could want!
http://eshop.macsales.com/item/Other World Computing/MEFW924AL1K/
i think this is the major advantage of FW...however, most eSATA drives also have FW, too, so that shouldn't be an issue.i would probably go for the 800 firewire.
to me, the huge advantage of firewire over esata, is that with firewire, you can boot a mac from a firewire disk drive.
(i read of someone trying to boot off of a express card slot in the macbook pro, and they were unsuccessful)
What are the odds Apple is gonna include an eSata port on its next-gen iMac?
I'd say they're pretty low. I really want an eSATA port on all new Macs. FW800 just doesn't cut it in my opinion. You can say what you like about the typical consumer's knowledge, but eSATA is fairly mainstream for DVR owners. Although you can't often boot from eSATA drives, I believe that's a problem with OSX and not eSATA.
would it be likely for apple to offer some kind of expansion slot on any new imacs (specifically expresscard).
I don't think for a while, there isn't a need. It would appear in the MP first. The iMac is geared toward consumers, (yes yes I know they are very powerful and all but thats who they are geared for), and the average consumer knows nothing of an eSata port or whats it's even used for.
Does eSATA carry power? Can you plug a 2.5" enclosure into it or would you need a power supply?
Doubt it. Like others have said, the iMac is more of an 'average consumer' machine, and most people will never have heard of an eSata port, let alone ever used one. FW800 should be fast enough for almost everything tho...