I have not made the jump yet. I took my Mini on vacation two weeks ago and it was great for checking e-mail and basic browsing, etc. And the lighter weight was a big help! However, I still ended up taking my Kindle for regular reading - books, blogs, newspapers. I really can't see myself giving that up at this point.
I do not like reaing magazines on a table or e-reader (except for PC Magazine and Readers' Digest). I much prefer the hard copy. I've tried and had high hopes, but it just did not work for me.