I am also still happy with my Sony readers, and will not likely abandon them soon. I went over to Sony from Nook for one overwhelming reason, organization and the ability to easily find what I want on the reader. Being able to tag books in Calibre and then have those tags become collections when I transfer the books is WONDERFUL!
I am a "whim" or "mood" reader, I read fast and like to have a lot of books on tap. But my memory just isn't going to be able to remember all titles or authors for a direct search.
That feature so far doesn't seem to exist in any other reader. Sadly for Sony, most folks are probably not such voracious readers as I am. I also re-read a lot.
Even so, my aging eyes really appreciate higher resolution, and the convenience of a built in light could be useful to me at bed time.
I think the T1 is a wonderful reader, and I'm sure the T2 is as well, but there are clearly a lot of folks who at least like the idea of the built in light if not the higher resolution and the subtleties of the Sony that make it a nice reader just don't stand out enough for the average buyer.
They botched it by not incorporating both higher resolution and a light.