Since I own the Nook Classic, I may have gone with the Nook Touch if it had been out sooner. As it is I like my Sony 350 because it is the perfect size for toting around. Plus I like the case design & the color of my pink Sony.
I never used the Wifi on my Nook for anything but buying from B&N. Did not use the web browser more than once.
So all in all I am pleased with my Sony purchase. BUT I am curious about any future Sony readers. I do know a lot of people want to see Wifi on the 650, personally it doesn't matter to me. It sure is fun seeing what new stuff comes out each year though.