My Sony 350s are still my favorite ereader, but when I'm out, it's usually the Kobo Glo I take because I need the light. Just riding public transportation, you're in and out of tunnels where you'd have to pop the light on and off constantly with a clip on light or lighted cover. With the front light, you don't have to do a thing, there's zero interruption to your reading as you go into dark and bright areas.
Not to mention how really geeky the lighted covers with arms extending over the text look
.
So even for me, while I really want the Sony stability and software, I really want a front-lit screen as well.