I've mostly using the Kobo Glo for the light lately, and a few days ago I picked up a 350 to test something on it and the feel was just sooooo nice and comfy, everything what carpetmojo said. The feel of the glass on the 350 is like silk compared to the screen on the Glo. And it takes just the slightest thumb movement to turn a page, whereas on the Glo you have to do a deliberate long slow swipe and even then it can skip turning the page. And that long swipe needed makes you feel the rough glass even more.
Damn Sony for not putting a front light on their readers!
Especially for the x50 line. That line of readers was the closest to perfection, everything I'd ever want in a reader, except for the missing front light.