Thanks all for this huge information. My requirements are for pdf, both academic and documentation), highlighting, notes. I am convinced 9" is a minimum for this use case and I cannot decide between Boox M92 and PB912. Both have pros and cons. PB multitasking is important for me as a good multi-column management. M92 is far more responsive and have a better rendering. All have wifi. I am convinced this is completely useless on a e-ink reader which will be too slow for still a long time.
In the past, I had a Sony PRS950, but the screen is broken (some one walked on my bag - not a default from the device). Globaly I was satisfied, but the software was still not mature enough in terms of usability.
I think I am going to wait a few months for the
Sony 13.3 Inch.
I hope the price won't be too big.....