Got a nexus 7, love it. It didn't replace my cybook for e-reading though. Save for mangas.
Memory, it really depends of what you mean to do. I took the 32G, mainly because the 16G was out of stock.
If your sole purpose is e-reading, you''ll be fine with 16G no problem.
When you begin to watch video / play HD games, there 32G can come in handy.
Last edited by EowynCarter; 12-10-2012 at 08:02 AM.