Well, first impressions so far are very positive. I'll get the moaning out of the way first - the recharge and connections through the supplied pod *are* a bit clunky; the umbilical that connects the pod to the iLiad as mentioned before is a bit stiff, and if you're doing aught but laying the thing flat when it's connected you do worry a bit about putting a strain on the thin little connector. I'd've preferred power, USB and eth ports on one of the edges like on my origami - the bottom edge is fat enough for them I'd've thought.
The display is really lovely. Just like paper you do need to be in reasonable light to read. Out in the sunshine it's *stunning* (at *last* a device I can use outdoors!). The device is light and comfortable to hold. At the moment of course you really need the *right* PDFs to read with it since there's no zoom option yet but we all know that the software is unfinished at the moment. What's there is eminently usable if you have stuff that's natively the right size.
I am getting the same trouble that others have with intermittent recognition of my SD card - sometimes I need to re-insert it a few times before it gets read correctly. I suspect this may be due to the fact that it takes quite a deep push to get it to lock in, and sometimes it comes out again and requires a second push. Perhaps it starts to read it and then when it disappears again gets confused so when you do get it to go in it doesn't have the index. Maybe adding a short delay before reading the index would fix that, I dunno.
Annotation seems to work well, with the display being updated quicker than I thought it would be. Mine came with no templates - thanks to those who put the missing content online
.