Hi
I imported a US 505 here to the UK about six or so months ago. I'm very happy with it, using it mainly for (dubiously obtained I'm afraid) ebooks and manga.
I'm slightly perturbed by reports, however few, of some Readers getting bricked. Given that it's an import, it would be a complete arse getting it replaced under warranty should anything happen to it during the update. Thing is, I never use it for pdf's, nor will I ever use it for epub's. As far as I can see, the only feature I would quite like is the ability to delete on the Reader itself, but it's hardly an essential feature with my usage - I tend to bung a load of stuff on there and I'm good for a couple of months
Am I missing anything should I choose not to update?
I have a similar paranoia about my launch US PS3, I *always* give it a week or so before updating the firmware, especially since it'd be very tricky to replace an original 60gb these days.