Nexus 7.2 with Mantano for me, haven't touched my Paperwhite ever since. Text is _that_ much crisper. I'm even considering to get a commercial font I really like--on that screen, it should be ridiculously beautiful.
Then, I never liked not being able to choose reading software on my eInk kindles. For me, the pre-canned Amazon experience feels rather basic. It works, but that's about the best thing I can say. On the other hand, unless I'm dreaming, my preferred reading app even has an algorithm to prevent widows and orphans.
This sort of thing matters to me.
All things combined: I'm really happy with my tablet.