I am very happy to talk about Kindle paperwhite 3G. All my life with physical books which are still my number one preference.
However Kindle editions are cheap as well as take less space than physical books in a Mumbai apartment. Through the years I used the cloud reader, tablet and phone based Kindle application, my tablet, IPAD etc. Never considered buying a Kindle.
The experience of reading it the first time was so real and unbelievable that I cursed myself from staying away for so long without one. The 300ppi gives very sharp near paper quality reading experience including in sunlight. Its a very different and unique experience and a joy to read.