No distractions, easy on the eyes. Would be nice if the contrast were even better for low light environments. Maybe this 2.0 would do it.
I seem to have lost my pen though, so I'm not sure what I'll do for any annotation now.
But, the eBook (as in published books) experience is pretty bad compared to basically anything. What even the RM2 does is just load the epub/pdf into the editing buffer and other than somewhat faster navigation and a hidden menu, it's not good at all for consumption.
If they could just side load the Kindle or kobo app I'd buy it in a second. For now, I'll keep reading ebooks on my phone.
PDFs are also a bit friendly for annotation, at least in my experience with GoodReader on the ipad.